“扣紧”造句

他把盖子扣紧,以使内容物保持干燥.
He snapped the lid on to keep the contents dry.

不一会儿, 潜水艇内所有的东西都扣紧了.
Within a short time, everything on the submarine was buttoned up.

两只衣箱的皮带都已扣紧.
The straps on the two suitcases were secure.