talk up . speak loudly and clearly大声而清晰地讲

The teacher asked the student to talk up．老师叫那个学生大声说清楚。

Please talk up a bit; we can't hear you．请大声点，我们听不见你的话。

talk up . speak without hesitation；speak distinctly and openly坦白地说；直率地讲

If you thought that wasn't fair，why didn't you talk up?  如果你认为那不公平，为什么不坦率地说出来?

Jorge isn't afraid to talk up when he disagrees with the teacher．乔治不同意老师的意见时，就直言不讳。

talk up .  speak in favor of; discuss enthusiastically 为…说好话；赞扬；热烈讨论

This dictionary was talked up by the students. 这本词典受到学生们的好评。

The committee talked up late last night．昨晚委员会讨论热烈，直到深夜。

tall order . A requirement or undertaking which makes excessive demands过高的要求；难办的事

Repairing the machine in half an hour is a tall order，but we can try．半小时之内修好这台机器是很难的，但我们可以试试。

tamper with . handle ignorantly or foolishly;busy oneself rashly with胡乱处理；瞎弄

He tampered with the insides of his watch and ruined it ．他瞎弄手表里的机件，以致把它弄坏了。

tamper with . secretly get somebody  to do or say wrong things（esp． by giving him money or by threatening to hurt him）（用不正当的手段）使某人做坏事

The candidate tried to tamper with the voters but in vain．候选人企图收买投票人，但未能得逞。

tamper with . make unauthorized changes in 篡改

The document doesn't seem genuine；it must have been tampered with．这文件不象是真的，肯定被篡改过了。

taste of . have a taste like吃起来有…味

This water tastes of sugar．这水有甜味。

team up . work together as a group与…合作

It is a pleasure to team up with such excellent workers.与这么好的工人合作是令人愉快的。

 tear apart . divide painfully; upset; disturb severely把…痛苦地分开；使心烦意乱；使心碎

The country was torn apart by fierce intertribal hostilities．种族间的激烈冲突把这个国家弄得四分五裂。

The news of his father's stroke tore him apart．他父亲中风的消息使他非常痛苦。

 tear apart . tear with considerable force扯开；撕开

He's always tearing motors apart and putting them back together again. 他总是把发动机拆开再装上。

 tear down . take to pieces； demolish（old things，）拆下；拆除（破旧东西等）

We shall have to tear the engine down completely and oil every part．我们得将发动机全部拆开，给每个部件上油。

They tore down the old building and built a new one．他们拆除了旧楼，盖起了新楼。

tear off . remove by puling roughly撕下

The child tore the wrapping off his birthday present．那孩子撕下了生日礼物上的包装。

I caught the pocket of my coat on a nail．It was nearly torn off．我的上衣口袋给钉子钩住，差一点给撕了下来。

tear off . perform or do， esp. rapidly or casually草率地做；匆匆地做

He tore off a letter to his family while waiting in the airport lounge．他在候机室等飞机时，匆匆写了一封家信。

tear up . tear completely into small pieces 撕碎

He tore up the letter and threw it into the waste paper basket．他把信撕碎并扔到废纸篓里去了。

tear up . cancel（a contract， an agreement，etc. ）撕毁；取消（合同、协议等）

He told the lawyer to tear up the old contract and to prepare a new one．他告诉律师把老的合同作废，准备一个新合同。

Neither the buyer nor the seller should tear up this contract．不论买方或卖方都不得毁约。

tell on . tell upon . disclose；inform against告密

I'll tell on you when the teacher gets back．老师回来时，我将把你的事汇报给老师。

Jimmy told on his brother for breaking the vase．吉姆把弟弟打碎花瓶的事告诉了妈妈。

tell on . tell upon . have bad effect on对…有恶劣影响

All those late nights are beginning to tell on his health．他熬了那么多夜，身体受到了影响。

All this smoking and drinking will tell on his health in later life．这样地抽烟喝酒将对他今后的健康不利。

The noise pollution is telling on her nerves．噪音污染使她的神经受不了。

 tell apart . distinguish between； tell one from the other识别；辨别

Most new cars look so similar that it is impossible to tell them apart．许多新汽车看上去象是一样的，不大可能把它们区别开来。

I confused Jim with Mike because I can't tell them apart．我把吉姆和麦克混淆了，因为我分不清他们。

The two brothers are so much alike that their mother can hardly tell them apart．这兄弟俩长得太相象了，连他们的母亲都难以辨别。

 tell by . know by；judge by根据…判断

In England，it,is,easy to tell a person's class by his speech．在英国，根据一个人的言谈就很容易判断出其所属的社会阶层。

 tell from . tell apart辨别；识别

Some people can't tell blue from green.在些人分辨不出蓝色与绿色。

 tell off . reprove训斥；斥责

The director told off Jim for being late for work again. 吉姆又一次迟到了，受到主任的训斥。

The boss told his secretary off for making private telephone calls from the office．老板训斥了他的秘书，因为她从办公室往外打私人电话。

She didn't like being told off in front of other people so she gave in her notice．她不愿意当众挨批评，于是递交了辞职通知书。

ten to one . ten chances to one for or against something happening十有八九；大概

Ten to one he'll succeed．他十有八九会成功的。