How'd you know it had a false bottom?

你怎么知道箱子有暗层？

Curators found the cup has a false bottom which rusted away over time.

工作人员在陶瓷杯底部发现了生锈的夹层。

" But the false bottom ain't ready" .

“但假底还没有准备好”。

The drugs were hidden in a suitcase with a false bottom.

【FALSE】毒品藏在一个有暗底的手提箱里。

The drugs had been hidden in a suitcase with a false bottom.

【bottom】毒品被藏在一个行李箱里，那行李箱有一层假底。

He wiped the perspiration from his forehead, then snatched up the casket, turned it over, examined it, as though he hoped to find a false bottom.

他擦了擦额头上的汗水， 抓起棺材，翻过来仔细端详， 好像希望找到一个假底。

This sudden change in water temperature is known as the Thermocline, and the resulting  change in water density is so pronounced that submariners will pick it up as a " false bottom"   since sonar will reflect off this layer.

这种水温的突然变化被称为温跃层，由此引起的水密度变化非常明显， 潜艇人员会将其视为“假底” ，因为声纳会从这一层反射。

" The very thing I asked myself. " Maester Luwin drew a tightly rolled paper out of his sleeve. " I found the true message concealed within a false bottom when I dismantled the box the lens had come in, but it is not for my eyes. "

" 这正是问题所在。" 鲁温学士从衣袖里取出一封卷得密密实实的信笺。" 于是我把整个木盒分解开来，在假的盒底找到真正的信。不过这封信不是给我的。"