Elephants wear the tusk down faster than they can grow it.象牙磨损的速度快于生长的速度。A huge tusk decorated the wall of his study.他书房的墙上装饰着一支巨大的象牙.The narwhal's single, spiral tusk has always been a mystery.独角鲸那独一无二的螺旋状尖角总是被视为神秘...
在转换时期的RNA合成可能有短暂的骤增.During the climacteric may be a transient burst of RNA synthesis.他们想今后几年内使哈珀 - 格兰特公司的营业额骤增两倍.They want to treble Harper & Grant's business over the next few years.如果发动机回火, 进气歧管骤增的压力就迫使阀门向后移动.If t...