植物的肺就是其叶片上微细的气孔。A plant's lungs are the microscopic pores in its leaves.在干旱的条件下, 叶子的膨压减少而气孔关闭.Under conditions of water stress, leaf turgor decreases and stomata close.他使橡胶塞牢固地塞进盖上的排气孔.He presses the rubber stopper ...
Not everyone is born with such endowments as you.并非所有的人生来都像你这样有天赋.His endowments are limited, and scarcely fit him for this post.他的天资有限, 不太适合担任这项职务.Can you possibly compare with my endowments?你能跟我比本事 吗 ?...
The motivation of sperm donors varies.捐精者的动机各不相同.Squid beaks are often found in the stomachs of sperm whales.经常能在抹香鲸的胃里发现鱿鱼的嘴.The length of a sperm whale's tooth is 20 cm.长度的一抹香鲸的牙齿是20厘米....