胸内骨是由各胸节背、侧、腹部的内陷构成.Endothorax is composed of invaginations of the tergal, pleural and sternal regions of each thoracic segment.VEGF也是胚胎发育 、 软骨内骨形成 、 女性生殖系统、以及肿瘤和眼球内血管新生所必需的.VEGF is essential for embryonic development, e...
The vehicles have a top speed of 80 kilometres per hour.这些车辆最高时速为80公里。During the evening rush hour it was often solid with vehicles.在交通的晚高峰时段，这里通常被车辆堵得水泄不通。Less than a half hour later he returned upstairs.不到半个小时，他又跑上楼来。...
It was a question that Roy not unnaturally found impossible to answer.那是个罗伊显然无法回答的问题。Not unnaturally, Jane greatly resented Harry's interference.很自然地，简对哈利的干预极为不满。Try to avoid shouting or speaking unnaturally.尽量不要高声喧...