...tropical birds screeching in an aviary...在鸟舍中尖声鸣叫的热带鸟I kept the birds indoors all winter and introduced them into an aviary the following June.整个冬天我把鸟关在室内，然后在接下来的6月份把它们放入鸟类饲养场饲养。The birds will winter outside in an avi...
实际要用的项数的多少取决于收敛的快慢程度.The number of terms actually used depends upon the rapidity of the convergence.它的大小表明经济效益水平提高的快慢程度.Its size indicates the speed rate that economic benefits level raises.物体的速度所表示的,只是物体运动的快慢.It is only...
The feeding of dairy cows has undergone a revolution.乳牛的喂养方法发生了巨大的改变。They ran the general store and the farm dairy.他们经营着杂货店和农场的乳品店。Non-fat dairy products supply the needed nutrients without excessive calories.脱脂乳制品能提供身体所...