I saw you beetling off early at the party .

我见到你 早早从宴会 中离开。

He 's been beetling away at his work all morning .

他整个上午都 忙 着工作。

The water crisis became a beetling problem of the sustainable development of the global .

水资源危机已成为全球可持续发展的一个 日益 突出的问题。