As I said, it's a particularly hazardous substance and is worked with in fume hoods.

就像我说过的，这是尤其有害的物质，在通风柜中才能用。

What if several Robin Hoods were rowing a boat to steal on tankers near the Horn of Africa?

如果有几个罗宾汉划着小船在非洲之角附近的油轮上行窃呢？

On constant volume hoods, this raises the capture velocity.

在定容罩上，这会提高捕获速度。

You will need new hoods.

您将需要新的抽油烟机。

Keep your heads down and your hoods up.

拉上兜帽，低下你们的头。