v. 向有关单位报告自己已经来到 to report one's arrival to the relevant unit

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

n. 一种赔偿方法 insurance; adj. 稳当可靠 sure, safe

v. 保存不变 remain as before, retain; 留下，不拿出 retain

n. 技能, 能力 skill, ability, capability

v. 使继续存在，不受损失或不发生变化 preserve, conserve, keep, ensure no damage or change