如果你需要，帮助总是近在咫尺。

Help is always close ___at ___hand if you need it.

我无法查这个单词，因为手边没有字典。

I couldn't look up the word because I had no dictionary ___at ___hand.

截止日期临近，所以我们需要快点工作。

The deadline is ___at ___hand, so we need to work quickly.