该包装法常用的气体是氮气 、 二氧化碳和氨气.The wrapper method commonly used gas is nitrogen, dioxide and ammonia.生命生产出甲烷 、 氨气 、 氧气 、 氢气 、 二氧化碳以及其他气体.Life generates methane, ammonia, oxygen, hydrogen, carbon dioxide, and many other gases.树木能...
Scientists have tended to skate over the difficulties of explaining dreams.科学家们往往回避释梦的难题。Scientists have tended to skate over the difficulties of explaining dreams...科学家们往往回避释梦的难题。They were picked to skate against the vi...
She cast a sidelong glance at Fern.她瞟了一眼弗恩.There are many different types of fern, none of which produce flowers.蕨类植物有许多不同的种类, 无论哪一种都不长花.Kennicott was cordial to Fern Mulins.肯尼科特对弗恩马林斯小姐倒是很亲热....
The dog cringed when it saw my stick.狗看见我的手杖就退缩了。Molly had cringed when Ann started picking up the guitar.安开始弹吉他时，莫莉感到有些难堪。I cringed in horror.我吓得往后缩。Siegfried cringed and shrank against the wall...西格弗里德畏缩了，退避到墙根。Siegfri...