我们看见一艘潜艇浮出水面。

We saw a submarine come to the top.

youdao

明级只有55名船员而不是70名，而且在潜艇浮出水面的情况下全部遇难也是非常离奇的事。

The Ming class boats have a crew of 55, not 70, and it would be unusual for everyone on board to be killed while the sub was on the surface.

youdao

通常电池只能运行最多12小时，故这类潜艇大部分间用柴油发动机推进。潜艇浮出水面或半浮出水面（使用二战时德国首先采用的Schnorkling装置）时必须用柴油发动机。

Normally, battery power is only good for a up to twelve hours of operation and such subs spend most of their time propelled by their diesel engines.

youdao