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1·It's good to have a friend to fall back upon.

有个可依靠的朋友是很好的。

2·If we are to deal purely with Twain the humorist, we have to fall back upon the details of his art.

假如我们把马克·吐温当作一个单纯的幽默作家来看待，我们得转回头分析他的技巧。

3·So we often have to fall back upon more gifted souls to interpret for us what we mean but cannot say.

所以我们通常不得不依靠有才华的人为我们解释我们表达不出的意思。

4·That is quite possible, 'remarked Heathcliff, forcing himself to seem calm:' quite possible that your master should have nothing but common humanity and a sense of duty to fall back upon.

“那倒是挺可能的，”希刺克厉夫说，勉强使自己显得平静，“你主人除了出于世俗的仁爱观念和一种责任感之外就没有什么可依仗的了，这是很可能的。”

5·Upon waking, stay up for anywhere from half an hour to an hour, and then try to fall back asleep while remaining conscious of what's going on and thinking about your next dream.

醒了之后，不管啥时候醒的，等半小时一小时的，然后试着保持着意识进入梦乡，想着你的下一个梦。

6·Let fall upon its back the soot that falls from chimneys.

脊背接住烟囱落下的煤灰。

7·Upon taking the fall, analyze how well the belay system worked. (It is trustworthy after all! ) Now, climb back up a foot or two higher than before and take another intentional fall.

当绳索制动以后，你向外翻出的身体仅冲坠了一小段距离，分析保护系统是如何工作的。