Several moments went by, one of the big Jacks pawed at the ground with his hooves and another looked behind him, as if to check the rear for a surprise attack.

过了好一会儿，其中一只大公驴用蹄子刨地，另一只回头望向他，似乎在检查后面那只是否会突然袭击。

The main-beams of the lower deck had to be shored with screw-jacks forthwith.

下层甲板的主梁必须立即用螺旋千斤顶进行支撑。

She's complaining about the jacks.

——她在抱怨厕所。

A pair of Smilin 'Jacks.

你们俩是一对微笑杰克。

He jacks up his shed.

他把他的小屋整理好。