... upward air current 向上气流 upward force 向上力 upward identification light 机背识别灯 ...
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意志力在用于积极向上的目标时是最具活力的。
Willpower is most dynamic when applied to positive, uplifting purposes.
那种向上推的力,我膝盖举起时的感觉,这一切我已经忘记多年了。我自己不能举起膝盖,所以不得不再次去感受它。
That push-up I felt and my knee lifting it is what I've forgotten. I couldn't reproduce it myself so I had to feel it again.
所以也有向下的力,图钉上的力mg向上。
Mg so also here we have now mg down, so we have at the pin mg up.
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