This is because the top of the troposphere is normally very cold, causing ascending water vapour to freeze into ice crystals that drift and fall, rather than continuing up into the stratosphere.

这是因为对流层的顶端通常极其寒冷，上升的水蒸汽凝结成飘落而下的冰晶，而没有继续上升进入平流层。

youdao

Put less food on your plate. Freeze your credit card into a block of ice.

放少一点的食物在你的盘子里，把你的信用卡冻结成一块冰。

youdao

By 2050, he said, millions of bored human beings would freeze themselves in order to emigrate into the future to find adventure.

他说，在2050年以前将有几百万百无聊赖的人类将把自己冷冻起来，以便移居到未来世界去历险。

youdao

In colder climates, parsley can go into the ground two to three weeks before the last winter freeze is likely to happen.

VOA: special.2009.06.02

And I believe we pulled the economy back from the abyss." To combat a crippling credit freeze, central banks slashed interest rates and pumped cash into credit markets.

VOA: standard.2010.04.21

Logically, owning long-term TIPS will probably work out well only if the economy plunges into a multidecade deep freeze or bursts into rampant runaway inflation.

WSJ: Upside: Looking for Inflation Protection? Take TIPS off Your List

Now, the reason that I'm not proposing the discretionary freeze take into effect this year -- we prepared a budget for 2010, it's now going forward -- is, again, I am just listening to the consensus among people who know the economy best.

WHITEHOUSE: President Obama Takes Questions at GOP House Issues Conference | The White House

Her company, Promessa, is developing a process that uses liquid nitrogen and ultrasound to transform corpses into freeze-dried chunks that can be plowed easily into a churchyard or memorial park.

FORBES: Dead Man Working