at ones elbow -用法

at one's elbow

close by； very near at hand在手边；在手旁

Having our own kitchen has one advantage；everything is at our elbow．有一间我们自己的厨房就有好处，每样东西都近在手边。

He always keeps an encyclopedia at his elbow for reference．他手边总是放着一本百科全书，以备参考。