在警队驱控下，群众开始后退。
如果停止努力，哪怕只有一小会儿，就会开始后退。
If you stop focusing even for one minute, you will start slipping backwards.
火车开始向后退。
倾听你的身体，当你感觉开始疼痛的时候及时后退一步。
Listen to your body and back off when you begin to feel pain.
如果我们后退几步，从头开始考虑，有一个计算硬件。
If we take a few steps back and consider the beginning, there was computing hardware.
这一趋势开始时有片刻的后退，并且是未来一年的重要主题。
This trend started awhile back and is an important theme for the year ahead.
那辆货车开始慢慢地往山下后退，并在溜坡的过程中速度越来越快。
The truck started going backward, and building up speed on the way down.
等时间到了，要么让自己开始担心，要么再往后退。
When that time comes, either let yourself worry about it or postpone it again.
如果你不向后退，我只好开始射击。
If you don't withdraw, I have no other option But to start shooting.
如果你不向后退，我只好开始射击。
If you don't withdraw, I have no other option But to start shooting.
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