Do not add meat, fish bones or fatty food wastes to the compost mixture.

VOA: special.2009.06.23

So, you can imagine what happens as it gets deposited into your bones, which is not the ideal situation after a long day in the lab.

所以你可以想象,当它碰到你的骨头时候会如何，当你在实验室,呆了一整天后这样可不太好。

麻省理工公开课 - 化学原理课程节选

Weightlessness does not let bones do their normal work of supporting the body.

VOA: special.2009.03.10

But while broken bones can be painful, they are generally not life-threatening.

VOA: special.2009.02.04