大多数海洋腹足纲软体动物在某些幼体阶段形成一种有纤毛的游泳器官。Most marine gastropod mollusks develop a ciliate swimming organ in certain larval stages.其中,双神经纲3种,瓣鳃纲68种,腹足纲80种.Among them there are 3 species of Amphineura, 68 species of Lamellibranchi...
The wanderer has to sleep rough.这个流浪汉到处为家.Jobless and penniless , he had to sleep rough in the fields for several months.他既无工作又无钱,只好在野外露宿数月.Those who do not have relatives to return to are left to wander the streets and ...
Soldiers using a multiple rocket launcher scored a direct hit on the steeple of a church.士兵们使用多管火箭筒直接击中一所教堂的尖塔。His favourite gadget is a Russian - made rocket launcher which holds 40 three metre - long missilles.他最喜欢的还是那...
观众热烈参与的演出a show with lots of audience participation严格的选拔标准是否会造成精英主义，进而危及奥林匹克重在参与的理念呢？Will severe selection standards create elitism and threaten the Olympic ethic of participation?这个方案要想真正成功，他们就需要增加参与的农场主的人数。They need to...