He has never exhibited the self-confidence, bordering on arrogance, of his predecessor.他从未表现出他前任的那种近乎傲慢的自信。Lacking self-confidence and maturity, many teenagers are left feeling very vulnerable.许多十几岁的孩子既缺乏自信又不够懂事，所以感情上十分脆...
In this age of thermonulear technolgy, neither view can assure man's preserv ation.在当今的热核技术时代, 这两种观点都不是以保障人类的生存.The term null hypothesis arose from earlier agricultural and medical applic ation of statistics.无效假设这个概...
External ethmoidectomy is a method of choice for malignant lesions.恶性肿瘤以手术加放疗治疗,鼻外筛窦径路是治疗此类恶性肿瘤的优选术式.Objective To evaluate the effect of ethmoidectomy for the treatment of optic neuritis under nasal endoscope.目的评价鼻内窥镜下筛窦...