at least 意为“至少”
in the least 意为“一点，丝毫”，多用于否定句中。
如：I haven't seen you for at least ten years．我至少有十年没见到你了。
I don't understand in the least what he is trying to say．我一点都不明白他在说些什么。 143．even if, even though
二者均意为“即使，尽管”，大部分情况下可通用，但是也有一点小的区别。 如：Even if he is poor, she loves him．(He may be poor．) even if侧重假设 Even though he is poor, she loves him．(He is poor．) even though侧重事实 144．only if, if only
only if 意为“只有……才……” if only 意为“只要，要是……就好了”
如：One can succeed only if one works hard．只有努力才能成功。 If only I were you! 如果我是你就好了。 145．in a sense, in all senses
in a sense 意为“在某种意义上说” in all senses 意为“在任何意义上说”
如：What you say is true in a sense．你所说的话有几分真实性。
It's quite necessary for a college student to learn a foreign language in all senses．一个大学生学一门外语是相当必要的。
146．in course of, in the course of in course of 意为“正在……中”
in the course of 意为“在……的过程中，在……期间”
如：The railway is in course of construction．铁路正在修建中。
I told him everything in the course of the trip．在旅途中，我把一切都告诉了他。 147．make up one's mind, read one's mind, change one's mind make up one's mind 意为“下定决心”
如：He made up his mind not to speak a word．他下定决心不说一句话。 read one's mind 意为“看出心事，知道在想什么”
如：I've known him so long that I can read his mind．我认识他这么久了，以至于我能知道他在想什么。 change one's mind 意为“改变主意”
如：He changed his mind suddenly for no reason．他突然无故改变主意。
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148．come to an end, draw to an end, put an end to come to an end 意为“……结束了”
如：The meeting came to an end at last．会终于开完了。 draw to an end 意为“快要结束了”
如：This year was drawing to an end．这一年要过完了。 put an end to 意为“结束（不好的事），制止”
如：We must put an end to this foolish behavior．我们必须制止这一愚蠢的行为。 149．keep out of, keep out, keep up keep out of 意为“不牵涉进去，避开”
如：I'd rather keep out of his troubles．我不愿卷入他的麻烦中。 keep out 意为“阻止，不让……进入”
如：The coat can keep out the cold．这件衣服能御寒。 keep up 意为“保持”
如：Keep up your spirits．保持你的精神。 150．carry out, carry off, carry away, carry on carry out 意为“实施，遵守”
如：He carried out his promise to give up smoking．他遵守了戒烟的诺言。 carry off 意为“叼走，夺走”
如：He carried off two gold medals in the Olympics．他在奥运会上夺得两枚金牌。 carry away 意为“使倾倒，使激动得失去控制” 如：The music carried him away．音乐使他倾倒。 carry on 表示“继续进行”
如：carry on the work 继续开展这项工作。
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