All theories originate from [in] practice and in return serve practice.\x0d任何理论都来源于实践,反过来为实践服务. The internal lamellae originate from an invagination of the inner of double membrances that surround the plastid\x0d片层起源于围着质体双层膜的内膜向内折伸. Many cases of seasickness originate in indigestion.\x0d许多人晕船是由于消化不良而引起的. The theory of evolution did not originate with Darwin.\x0d进化论并非始自达尔文.
