他明白稍有差池就会被置于死地。He knew one false move would end in death.原发性肿瘤并不会置人于死地，致命的是身体其他部位的继发肿瘤。It is not the primary tumour that kills, but secondary growths elsewhere in the body.那只狐狸和一群随时可能置其于死地的猎狗冒险周旋。The fox takes his chance...
界面反应的存在提高了润湿性,促进了无压自发浸渗.The interfacial reactions enhance the wettability and promote the spontaneous infiltration process.本文首先阐述了浸渗的概念 、 分析了浸渗线PLC自动控制的原理.This article firstly expatiated the conception of Impregnation, a...