Cowpea crossbreeding has the problem that fructify cation is low according to the traditional method.豇豆杂交育种按照传统的方法存在坐果率低的问题.Cation - anion exchange resin can crack and disassemble bond - chromatography , doff the bond - ...
飞艇在海面打圈子.The airship circled at sea.必要时，飞艇能在那里停留数天以躲避危险。If necessary, the airship can stay up there for days to keep out of danger.飞艇在几秒钟里烧成灰烬.The airship was completely burnt in a few seconds....
Captain Cook safely navigated his ship without accident for 100 voyages.库克船长驾驶的船安全出航100次无事故。His successful voyages showed what great advances had been made.他的航行成功说明航海业又前进了一大步.The old hunger for voyages fed at his heart.以...