目前，30%的爬行动物、鸟类和鱼类面临灭绝的危险。30 percent of reptiles, birds, and fish are currently threatened with extinction.恐龙是如何灭绝的？How did the dinosaurs die out?这些濒临灭绝的、性情温顺的大型动物属于高度群居的动物。These endangered gentle giants are highly social...
她把厨房门重重地关上，我甚至听到了碟子的震颤声。She slams the kitchen door so hard I hear dishes rattle.突然从下面传来一阵轻微的震颤声.Suddenly, there was a slight trembling sound from below.她以震颤声唱一首古老的民谣.She quavered an old folk song....
Rub the surface of the wood in preparation for the varnish.打磨木头的表面，为刷清漆做准备。Nobody else believed that they had tried to rub out the pope.其他人都不相信他们试图杀死教皇。Prick the potatoes and rub the skins with salt.将马铃薯戳一些洞，并用盐揉搓外皮。...