The rock was slippery as a ball, and they had to crawl rather than climb.

岩石滑得像个球，他们无法爬行，只能匍匐前进。

youdao

The ceiling was so low that we had to crawl.

天花板太低了，我们只好匍匐前进。

youdao

By then they had slowed to a crawl.

这时候他们简直像爬一样的前进。

youdao

By then they had slowed to a crawl.

这时候他们简直像爬一样的前进。

youdao