矿工氡子体个人累积暴露量估算规范: estimation standards of personal cumulative exposure to radon decay products for miners
生命: life; vita; vivi-; bio-; -biotic 短语和例子生命的本原 blood; 视荣誉高于生命 value honour above life; 生命是怎样起源的? how did life begin? 月球上没有发现生命。 no life has been found on the moon.; 生命保障系统 life-support system
