The effects of weathering can be simulated in the laboratory.在实验室里可以模拟各种天气产生的影响.This suggests that the optimum for biological weathering would be in a hot, moist climate.这表明生物风化最适宜的条件是湿热气候。The movement of water is also a...
他停下来，饶有兴趣地看着孩子如此投入。He stopped and watched with amusement to see the child so absorbed.消防车正要停下来，警报器发出刺耳的声音。The fire engines were just pulling up, sirens blaring.他在街灯下停下来，看着对面的咖啡馆。He paused under a streetlamp and looked ac...
It's the chamois'leaping powers, more than its fleetness of foot, that was astounding.是小羚羊的跳跃能力, 而不是它的奔跑速度使人吃惊.How does the fleetness increase a leucocyte?如何快速增加白细胞?Wolf preys on various animals, securing some ...