人体的免疫系统是抵御疾病的主要屏障。The immune system is our main defence against disease.这些人造屏障将会确保提供高度的保护。These man-made barriers will ensure a very high degree of protection.燕山是北京的天然屏障.The Yanshan Hills provide a natural defence for Be...
在人迹罕至的地方可以找到一些隐蔽的小海滩。Tiny secluded beaches can be found off the beaten track.我们向他们隐蔽的地方开火逼他们走出来.We shot them out of their hiding places.一些人当他们在隐蔽的地方游泳时,喜欢把衣服脱光.Some people like to strip themselves naked while they have a...
marine biota海洋生物区They have had serious effects upon the biota of stream.它们对河流中的生物群体产生严重影响.regional biota区域性生物群The past decade has witnessed the discoveries of various important fossils from the Mesozoic Jehol Biota.摘要最近十...