strike on . strike upon . think of or get suddenly or unexpectedly 偶然想起；偶然得到

He struck on a way of making diamonds．他突然找到了一种制造钻石的方法。

We struck on the idea when at work yesterday．我们昨天上班时忽然想到了这个主意。

He struck upon the book in a secondhand bookstore．他在一家旧书店里偶然发现了这本书。

strike out . remove 删去；涂去

You had better strike out the fourth paragraph．你最好删去第四段。

She struck out the sentence she had just written and added a new one．她把刚写的那句话删掉了，另加了一句。

strike out .  dawn on 想起；明白

He struck out a plan of doing the work well．他想出一个做好该工作的计划。

He struck out a plan for himself for the next year．他为自己拟订了下一年的计划。

strike out . start to do something new and different，esp．on one's own自成一路；创新

He decided to leave his father's firm and strike out on his own．他决定离开父亲的公司，出去开创一条自己的路。

He struck out a path through the thicket．他开辟了一条穿过灌木林的新路。

strike out .  try to hit somebody in a wild or uncontrolled way用力打

The little boy was frightened and struck out madly．孩子非常害怕，用手乱打。

He lost his temper and struck out wildly．他动了肝火，大打出手。

strike out . move quickly in a certain direction 向…快速走去；用手脚使劲划水

He dived off the boat and struck out for the island，他从船上跃入水中，朝岛上用力游去。

She stood hesitant for a minute and then struck out for the bus stop．她站在那儿迟疑了片刻，然后拿定主意向汽车站疾步走去。

strike up . begin playing 开始演奏

People won't get up to dance until the band strikes up．音乐声起，人们开始跳舞。

The band struck up as soon as the Queen stepped on the shore．女王一登岸，乐队就开始奏乐。

strike up . begin a friendship with somebody 建立起友谊

They struck up an acquaintance with each other on the beach and soon became very friendly．他们是在海滩上相互认识的，而且很快就建立起了友谊。

by degrees they struck up a friendship．他们逐渐建立了友谊。

string along . deceive somebody ，esp．by giving him false hopes欺骗；愚弄

She's been engaged to him for five years，but she'll never marry him．She's just stringing him along．她跟他订婚有五年了，可她永远也不会嫁给他。她只是愚弄他而已。

The governors felt that they were being strung along by their advisers．州长们发现顾问们一直在欺骗他们。

string along . accompany somebody 陪伴；跟随

We're going to John's party too．You can string along with us if you like．我们也去约翰的聚会。如果你愿意你就跟我们一起去。

Some ragged children strung along behind，hoping for money．有些衣衫褴褛的孩子跟在后面要钱。

string out . be spread or spread something at intervals in a line 按一定距离分散在一条线上

She was stringing out the clothes on the washing line when it started to rain．她正把衣服晾在晒衣绳上的时候，天开始下雨了。

The police strung out across the field looking for clues．警察按一定距离散开，在田里寻找线索。

string out .  prolong；extend 延长；拖长

The refugees were strung out along the dusty roads for miles．难民们沿着尘土飞扬的道路连成几里长的人流向前走着。

The promised three days strung out to six weeks．原先答应三天，结果延长到六个星期之久。

string up . hang something high 把…挂起来

They strung up colored lights all over the room．他们在整个房间里挂起了彩灯。

They strung up the ham for the winter．他们把火腿悬挂起来留到冬天吃。

string up . kill somebody by hanging 绞死（某人）

Two of the rebel leaders were strung up as a warning to the others．叛变首领中的两名被绞死，以做效尤。

string up . make tense，excited 使紧张；使振奋

On the evening of his big speech he didn't seem at all strung up．他在作重要讲话的那天晚上似乎一点也不紧张。

He strung up his nerves to do it ．他打起精神来干那件事。

strip down . take something to pieces 拆下

He is never happier than when he is stripping down the car．没有比拆卸车子更能使他开心的了。

We'll have to strip down the mechanism to trace the fault．只有把机械装置拆开才能找出毛病。

strip of . rob of 抢劫；剥去

The thieves stripped the house of its valuables．小偷偷走了房间里的贵重物品。

Man has been stripped of his superstitions by science．科学使人破除迷信。

strip off . take one's clothes off 脱去衣服

She stripped off and went for a swim．她脱了衣服去游泳。

strip off . remove 剥去（伪装）

Sham is sham and the mask must be stripped off．假的就是假的，伪装应当剥去。

The workmen stripped the old paper off the walls．工人们把墙上的旧纸撕掉。

strive for . make great efforts for 努力谋求

The government is striving for improvements in public housing．政府正努力改善公众的住房条件。

Personal freedoms are worth striving for．人身自由是值得为之而奋斗的。