If they absolutely have to sneeze, astronauts bend their heads downward and sneeze into their chest.

如果宇航员一定要打喷嚏，他们就会低下头，朝自己胸口打喷嚏。

It's only this very morning I plunged some fresh-gathered roses head downward in the water-jug, for, thought I, perhaps some one will be coming, and there's nothing so sweet as spring-water scented by a musk rose or two.

就在今天早上， 我将一些刚采摘的玫瑰花头朝下放入水壶中， 因为我想，也许有人会来， 没有什么比一两朵麝香玫瑰香味的泉水更甜美了。