Substances differentiated tissues secrete are called chalone.已经分化的组织分泌物称为抑素.Objective : To purify rabbit hepatic chalone HC , and investigate its biological activity, purity and molecular weight.目的: 制备家兔肝抑素纯品, 检测其生物活性 、 ...
He found that his extremities grew cold.他发现手脚变冷了。Exercise is very important as it keeps the circulation moving and warms the extremities.锻炼非常重要，它可以促进血液循环，保持手脚温暖。In the past, the region had been protected by its forbiddin...
长长一张布告上写着全部新兵的名字.A long placard bore the names of all the new recruits.学生们在布告牌上贴了一张海报.The students put up a poster on the bulletin board.他们把一张布告贴在墙上.They have pasted up a notice on the wall....
Man was evolved from an ancestor that was probably arboreal.人大概是从住在树上的祖先进化而来的....arboreal marsupials which resemble monkeys.和猴类相似的树栖有袋动物Squirrels are arboreal creatures.松鼠是栖于树上的动物....the arboreal splendor of the valley.这...