The rules state that samples must be enclosed in two watertight containers.规则要求样本必须装在两个水密容器中。The flask is completely watertight, even when laid on its side.即使平放，这个真空水杯也是滴水不漏。The case has to be made watertight.案由必须做到无懈可击。...
善意和同情心对于真正的成功是重要的主成部分.Kindness and compassion are important ingredients for true success.危崖一组构成部分多岩峭壁或岬的陡峭突兀的石块群.A steeply projecting mass of rock forming part of a rugged cliff or headland.粒化是人类认识的基础概念之一, 粒化是整体分解成部分.On ...
大多数身材发育迟缓者都会赶上他们的朋友。Most late developers will catch up with their friends.通常女孩性发育成熟要比男孩早两年。Girls generally reach sexual maturity two years earlier than boys.细胞不断地分裂更新，这是人体发育过程的一部分。Cells divide and renew as part of the hu...
Objective To observe susceptibility of Streptococcus mutans biofilms to erythromycin.目的观察变形链球菌生物膜对红霉素敏感性.Recent studies suggested that erythromycin may be effective in prophylaxis against pertussis in exposed, susceptibl...
它也产生微量化学迷幻剂二甲基色胺.It also produces amounts of the psychedelic chemical dimethyltryptamine.迷幻剂是指作用于精神的,能强烈改变感知 、 情绪及主体认知过程的药物.Hallucinogens are psychoactive substances that powerfully alter perception, mood, and a host of ...
They also play an important role in immune reactions.它们在免疫反应中也起着重要的作用.Nonbiological degradation processes play an important role in the dissipation of many pesticides in soil.非生物降解过程在消除土壤中的许多农药方面起着重要的作用.Variational princ...