请稍等片刻，我马上回来。

Just wait a ___moment, I'll be right back.

我在那一刻意识到自己错了。

I realized I was wrong at that ___moment.

这个小发明看起来简单，实际上意义重大。

This small invention may seem simple, but it's actually of great ___importance.

增加力臂的长度可以增大力矩。

Increasing the length of the lever arm will increase the ___moment.