当粒细胞检测到蚊子血液中有外来物体，它们会杀死他或是通知其他细胞完成这一工作。
When granulocytes detect a foreign body in a mosquito's blood, they can either kill it themselves or signal another cell to come do the job.
但是，在硝酸盐的周围发现包含氢气的氨，很有可能是来自富含水的外来物体- - -冰冷的彗星。
But ammonium, found along with the nitrates, contains hydrogen that most likely came from an incoming object rich in water - like an icy comet.
戴维斯指出，证明一种生物体不是“我们所知道的生命”的唯一办法就是看它是否是由其他生命形式所没有的外来元素组成的。
Davies suggested that the only way to prove an organism wasn't "life as we know it" was if it were built using exotic elements which no other form of life had.
这种复杂动物，包括鱼类、鸟类、爬行动物和哺乳动物(如我们人类)，具有高度细化的免疫系统，这样的系统不会允许这些外来生物体在我们的细胞中生长。
This group of complex animals, which includes fish, birds, reptiles and mammals (like us humans) have highly specialised immune systems, which should not let these foreign organisms live in our cells.
即使外来的物体是可见的，并且可以简单地用手指抓住，也要把这个留给医生来处理。
Even if the foreign object is obvious and can easily be gripped with finger and thumb, leave this too for the doctor to remove.
如果在伤口处有一个外来的物体，那么就应该在物体旁边按压。
If there is a foreign object in the wound, pressure has to be applied alongside it.
多指机械手抓取物体时，需要选取手指和物体的接触位置，最大限度地抑制外来扰动，实现稳定抓取。
When grasping an object with a multi-fingered robot hand, contact points on the object should be arranged deliberately to achieve maximum resistance to external disturbances.
多指机械手抓取物体时，需要选取手指和物体的接触位置，最大限度地抑制外来扰动，实现稳定抓取。
When grasping an object with a multi-fingered robot hand, contact points on the object should be arranged deliberately to achieve maximum resistance to external disturbances.
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