头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。Overhead, the chopper roared and the big blades churned the air.在南大街上，一座巨大的砖砌建筑赫然出现在人们的视线中。On South Main Street, a huge brick building looms into view.乳牛的喂养方法发生了巨大的改变。The feeding of dairy cows ha...
Inside the melanocyte a number of mechanisms control the formation of pigment.在黑色素细胞中,还有一些因素影响着色素的形成.Objective : To isolate and culture hair outer root sheath amelanotic melanocyte derived from human scalp.目的从人头皮毛囊外根鞘分离纯...
The tidal stream or current gradually decreases in the shallows.浅滩上的潮水逐渐退去。a tidal wave of crime犯罪高峰期The river is tidal up to this bridge.这条河的潮水会涨到这座桥....