苋一种普通的野草 ( 藜藜属 ),长有叶面有花斑的长矛 状 叶子,开有绿色的小花. A common weed ( Chenopodium album ) having lance - shaped leaves with a mealy surface and small green flowers.
一道拦河坝将会在上游拦住水流，抬升水位。A barrage would halt the flow upstream and lift the water level.拦河坝把河流控制住了.Rivers are controlled by dams.我们决定筑一道拦河坝.We decided to dam the river....
双管四十毫米火炮装置上的五名炮手被打中了.Five men in a twin - forty mount had been hit.介绍了一种双管正激变换器的LCD箝位电路,该电路实现了初级开关的零电压关断.The authors proposes a two - transistor forward converter with a LCD clamping circuit.双管 - 一条用于蒸汽供应,另一条用于凝结水回流.Two ...