题目内容
()不能用于半个指甲的粘贴，其与水晶粉融合连接后，能做出虚实逼真的假指甲。
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George told me he could not come here because his mother is ill --____________
()是一种通过电脑微波作用于人体的仪器。
The lateral distance between the original position where the vessel put the rudder one side and the farther lateral position where the vessel drifts away from the center of turning during the early stage of the turning defines ______.
以下哪种物质几乎不能通过扩散而通过生物膜
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