He had coarsened his voice to an approximation of Cockney.他让自己的口音变得粗俗起来，接近伦敦东区的发音。That's just an approximation, you understand.你知道那仅仅是近似值。This is the nearest approximation of cost that they can give us.这是他们能够给我们的最接近...
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...