brush away . 刷掉;把（某物）扫掉;轻而易举地对付（敌人）;无视
He brushed the whole business away．他对整个事情不予理会。
You can't just brush away our opinions．你不能这样置我们的意见而不顾。
brush off . remove with a brush；刷去；刷落
She brushed off the dust on her shoes．她刷去鞋子上的灰尘。
Don't worry，the dirt will brush off easily．别着急，这脏东西很容易刷掉。
He brushed the hairs off．她把身上的头发刷去了。
brush off . reject；dismiss curtly；not take seriously 拒绝；毫不客气地把…打发走；对…不在乎
He brushed off all our suggestions．他拒绝了我们所有的建议。
I invited him to watch an opera with me yesterday，but he brushed me off．昨天我邀请他同我一起去看戏，但是他毫不客气地拒绝了。
I didn't expect her to brush us off like this．我没有料到她会这样拒绝我们。
He cut his finger but he brushed it off and kept on working．他划破了手指，但他若无其事地继续工作。
brush over . brush fully 全刷；刷遍
I brushed the coat over．我把大衣全刷了一下。
brush over . treat lightly；almost ignore 轻率对待；几乎忽视
He brushed over the details of the policy．他忽视了政策的细节。
brush up . brush up,on . 重新学习；复习
I'll have to brush up my English before I go abroad．出国前我要温习一下英语。
He said he had to brush up on his history before the examination．他说他得在考试前复习历史。
brush up . brush up,on .刷净；擦亮
Your boots should be brushed up a bit．你的长统靴该搽搽亮。
brush up against . encounter 碰到
He has brushed up against trouble．他碰到了麻烦。
She never loses heart when she brushes up against setbacks．她遭受挫折时从不灰心。
brush up against . touch lightly 轻轻触到
I brushed up against her unintentionally．我无意间轻轻碰了她。
bubble over . 洋溢；抑制不住
She came back bubbling over with new ideas．她带着满脑子的新想法回来了。
build in . enclose in ；fix in 嵌入；（永久）固定
The cupboards are built in to the walls of the house．橱柜镶在屋子里的墙上。
It is not difficult to build wardrobes in if you want them．你想把衣柜镶在墙里，那并不难。
Yesterday he bought a transistor radio with an aerial built in．昨天他买了一架带天线的半导体收音机。
build on . look to ；rely on 依靠；依赖；指望
I'll build on your support．我将依靠你的帮助。
Don't build too much on his promise．不要过多地指望他的许诺。
build on .bottom on；be on the basis of以…为基础
We must develop our national economy by building on the development of agriculture．我们必须在发展农业的基础上，发展国民经济。
build on .add on as a new part 加建一个新的部分
We can build an extension on later if you want one．如果你想要，我们以后可以扩建一间房子。
build up .increase in power and number；develop；make stronger，establish．发展；使强大；建立
They have been building up their military strength．他们一直在发展军事力量。
The enemy are building up their offensive capacity along the border．敌人正在边界一带增强他们的进攻能力。
build up amass；accumulate gradually 聚积
Tension is building up in this area．这个地区的局势日趋紧张。
Clouds are building up over the sea．在海面上空，聚集着一片乌云。
He has built up quite a fortune in that business．他从那项经营中积累了一大笔钱。
build up 恢复健康；发育
Every morning he spends forty-five minutes doing physical exercises to build up his health．每天早晨他花四十五分钟锻炼身体，以增强体质。
He has built up a remarkable physique by following these exercises．他通过这些锻炼练出了非常健康的体格。
Good food builds up the body．好食品能促进健康。
build up acquire；increase in fame 取得；使…逐渐出名
He has built up his reputation．他使自己逐渐出了名。
They have built that boy up into a leading singer．他们已把那个男孩培养成了主要歌手。
bump into . meet by chance 偶然遇到
I bumped into an old friend in town today．我今天在城里偶然碰到了一位老朋友。
bump into . 猛击，猛撞
He bumped into a wall as he hurried along not watching his steps．他匆匆赶路，不小心撞在一堵墙上。
burn away . continue burning 不断地燃烧
The forest fire burned away for days．森林大火一连烧了好多天。