New information on the response of vegetation to air-fall volcanic ash is provided by analysis of phytoliths from sediments containing major tephra beds.

含火山灰层沉积的植硅体分析为了解植被对从空中下降的火山灰的反应提供新的信息。

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When melting snow crystals or raindrops fall through very cold air, they freeze to form small particles of ice,called sleet.

VOA: special.2010.01.05

Well, first of all, you may not survive for long, if you truly don't accept the fact that things, people being no exception fall when left in mid-air.

首先，你可能活不长，如果你不接受，人会从半空中掉下来的事实。

哈佛公开课 - 幸福课课程节选

When melting snow-crystals or raindrops fall through very cold air, they freeze to form small particles of ice, called sleet.

VOA: special.2011.01.11

Somebody kind of messed up and let his or her air conditioner fall from the third-story window onto our roof, which led to a visit from the neighbors.

NPR: Video Raises Questions About Bhutto Killing

"The Family Guy" creator and voice actor (not to mention one of EW's Entertainers of the Year and the host of the upcoming Oscars) will try to romance Marge in an episode that's slated to air next fall as the season 25 premiere, EW has learned.

CNN: Seth MacFarlane to guest on 'The Simpsons' as...

Living in the northeast, Philly to be exact, I always love feeling that cool, crisp fall air on a Sunday afternoon as my beloved Eagles gear up for battle.

FORBES: Blitz Package: My One On One With The CMO Of The Philadelphia Eagles