The particle radius unit, the micron, is especially common and useful.粒子半径的单位是微米, 微米这个单位尤其普通和有用.It changes working radius usually by luffing jib.通常多采用俯仰臂架的方法来实现工作幅度的改变.They deliver to within a 5-mile radius of the store....
那天晚上, 谢莉妲把手表放在衣橱里.That night, Cerita put the watch in her closet.在家里, 谢莉妲看了好一会儿的手表.At home, Cerita at the watch for a long time.谢莉妲由化妆台拿出手表.Cerita took the watch out of her dresser....