这将有助于增强他的信心。

This will help to ___build ___up his confidence.

她每天锻炼以增强她的力量。

She exercises daily to ___build ___up her strength.

可能需要很长时间建立起来的东西可能在很短的时间内被毁掉。

What might take a long time to ___build ___up could be ruined in a very short time.