Objective To observe bone mass changes during convalescence after simulated weightlessness.目的观察模拟失重恢复期骨质的变化.After convalescence he had a relapse.他于痊愈之后,病又发作了一次.Most operations are successful and the patient progresses sm...
美人是你留神的儿人,魅惑者则是留神你的儿人,油菜花开.A beauty a woman you a charmer is one who notice you.他在不留神的情况下遭受了打击.The blow caught him napping.这就像跟陌生人打交道一样,该留神的就得留神.Just keep up the same guards you would keep up if you were meeting any stra...