adj. 事理上确定不移的（跟“偶然”相对） inevitable, certain (as opposed to "偶然 occasional")

n. 技能, 能力 skill, ability, capability

n. 睡觉时盖在身上的东西 quilt

v. 把事情或意见正式告诉上级或群众 report, report events or opinions to one’s superiors or to the public; n. 用口头或书面形式向上级或群众所做的正式陈述 written or oral declaration made to a superior or to the public

adj. 不可缺少的 necessary, essential, indispensable

v. 表示（思想、感情）express (one's ideas or feelings)