Although the cartons are light and easy to handle, we think it is not strong enough to be shipped.
虽然这些纸箱轻便、易拿,但我们认为它们在运输中不太结实。
and one odd finding that makes the problem puzzling is that it looks very much as if sleeping is not simply a matter of giving the body a rest.
一项使人对这个问题感到困惑的奇怪的发现是,睡眠在很大程度似乎并不仅仅是为了使身体得到休息。