For now it is an open question whether other proteins have an equally hard time evolving backward.

其他蛋白是不是也有这样类似的逆转进化困难呢？这已经是一个开放性的问题了。

youdao

The process of using your body as a pendulum is to ask your higher self a question and wait for your body to respond in either a forward-tilting or backward-tilting motion.

将身体看做一个钟摆的方式就是问自己的高层自我一个问题并且等待你的身体向前或者向后摇摆的回应。

youdao

Backward induction is used to solve question.

采用逆向归纳法求解。

youdao

Worse, if it works and capitalism gains traction even in the backward north-east, locals might question the need for such an overweening central government.

ECONOMIST: The other China