No one knows why a fetus is not automatically rejected by the mother’s immune system.没有人知道为什么母亲的免疫系统不会自动排斥胎儿。Modern medical technology like type-B ultrasonic checks can reveal the fetus gender.现在的医疗仪器例如B超是可以分辨出胎儿的性别的。Gro...
The spade sank into a clump of overgrown bushes.铲子插入了一丛长势旺盛的灌木丛。Much of the track had become overgrown with hawthorn.小路上很多地方都长满了山楂树。...a garden overgrown with weeds.长满杂草的园子As the equipment was unpacked, I led Lee around ...
Plants have different mechanisms of dispersal for their spores.植物传播孢子的方法各不相同。police trained in crowd dispersal在疏散人群方面受过训练的警察The police ordered the dispersal of the crowds gathered round the building.警方命令聚集在建筑物四周的人群散开。...
为了实现优良的耐用性，主体部分90％采用钛金属制造。The body is 90% titanium for ruggedness.结构的弹性分析对耐用性是很重要的.An elastic analysis of a structure is important with regard to serviceability.耐用性一贯是布质橡胶鼠标垫的大难题.Durability of soft mouse surfaces are alw...
生产者 、 消费者、分解者之间周而复始的不断循环着.There exists an continuous cycle among those producers, consumers and decomposers.分解者:主要指细菌、真菌等.The matter cycle implies that the natrual ecosystem never produces garbage.分解者 —— 这将给你的根除者提供一架近程 反...