plough through . pass through with difficulty费力地在…前进
Many boats ploughed briskly through the sea．许多条船在海上破浪前进。
plough through . read or study with difficulty艰难地阅读或研究
We've ploughed through all the documents that can possibly have a bearing on your case．我们费了不少力气，才把同你的案子可能有关的全部文件看完。
pluck up one's courage . have courage鼓起勇气
The small boy plucked up his courage and went upstairs in the dark．那个小男孩鼓起勇气摸黑上了楼。
He plucked up his courage to ask her to marry him．他鼓足勇气向她求婚。
In times of difficulty we must not lose sight of our achievements，must see the bright future and must pluck up our courage．我们在困难的时候，要看到成绩，看到光明，要提高我们的勇气。
plug away . work persistently坚持工作
He's been plugging away at his new novel for nearly a year．一年来他一直在坚持写一部新小说。
Despite the difficulty of the task and the slowness of progress， they continued to plug away at it manfully．尽管任务艰巨，进展迟缓，他们仍顽强地继续干下去。
plume oneself on . be proud of oneself about；boast of 自夸；因…沾沾自喜
She plumes herself on the fact that she was educated in Europe rather than in the United States．她以不在美国而在欧洲受教育为荣。
He plumed himself on belonging to the aristocracy．他以自己是个贵族而洋洋自得。
plump down .plunk down . plonk down . drop down；fall落下；倒下
As soon as he reached the armchair，he plumped down into it ．他手刚摸到扶手椅就蓦地倒入椅中。
After walking a mile we plunked down on a bench to rest．我们走了一英里路以后，一屁股坐在长凳上休息。
plump down .plunk down . plonk down . drop something noisily or firmly砰地放下
She plumped down the heavy trunk and sat on a stone bench for a rest．她吃力地把那只沉重的箱子放下，然后坐在一张石凳上休息。
plump for . offer strong support for支持；拥护
He plumped for the Liberal candidate．他投自由党候选人的票。
Everyone plumped for his suggestion．大家都赞成他的建议。
plump for . choose选中；选定
We couldn't decide which car to buy，but we finally plumped for the red one．我们定不下来买哪辆车，但最后还是选中了那辆红的。
He always plumps for the best that's going．他总是挑选现有最好的东西。
plump up . fatten养肥；变丰满
We have really plumped up these chickens．我们确实把这些鸡养肥了。
The child's cheeks are beginning to plump up．孩子的面颊丰满起来了。
plump up . fluff out； make appear fat拍松软
Every evening she plumps up the cushions before she goes to bed．每天晚上睡觉前她都要把垫子拍松。
plunge into . begin work or an activity eagerly or abruptly投入（行动）
She plunged into her new assignment the moment she got it ．她一接到新工作就立即投入了进去。
When the subject was brought up，everybody plunged into the discussion．问题一提出，大家都投入了讨论。
plunge into . throw oneself into some state 陷入
She switched off the light and plunged the room into darkness．她把灯关了，房间一下子就黑暗了。
He was plunged into despair by the terrible news．听到可怕的消息后他陷入了绝望中。
They plunged deeper into debt．他们负债更多了。
point at . hold out a finger towards somebody or something 用手指
She was pointing at me．她用手指着我。
point at . aim用（枪）瞄准
She pointed a gun at his head．她用枪瞄准他的头。
point at . indicate（意思）指
What's he pointing at? 他指的是什么意思?
point of view . A way of considering or judging a thing，person，event，观点
From my point of view it would be better if you could come tomorrow，but you may not want to．从我的观点看，你明天最好来，但你可能并不想来。
You've given me quite a new point of view．你给我提供了一个新的看法。
point out . explain解释
He pointed out that it was not his fault．他解释说这不是他的过错。
I pointed out the advantages of the plan．我说明了这计划的优点。
point out . call to attention唤起注意
The policeman pointed out that the law forbids public sale of firecrackers．警察指出法律禁止公开销售鞭炮。
It was pointed out to him that his application had arrived too late．有人向他指出，他的申请交来太晚了。
When the mistake was pointed out to him he hastened to correct it ．人们向他指出错误时，他赶紧纠正。
point to . direct to指向
The needle of a compass points to the north．罗盘的指针指向北方。
Not far from there，you'll see a signpost pointing to the town you want to go to．离那儿不远，你就可以看到一个路标，指明你所要去的那个镇的方向。
point to . direct attention to指明；表明
Everything points to his guilt．一切表明他有罪。
Everything points to a bright future for us all．种种迹象表明我们都有光明的前途。