她是我们首席工程师——我们真的离不开她。

She's our lead engineer - we can't ___do ___without her.

我无法想象没有我的智能手机。

I can't imagine ___doing ___without my smartphone.

停电期间，我们不得不几个小时没有电。

During the power outage, we had to ___do ___without electricity for hours.