锕类任何化学性质相似, 原子序数在89 ( 锕 ) 与103 ( 铹 ) 之间变化的放射性元素. Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 ( actinium ) through 103 ( lawrencium ).
带上休闲的衣服。Bring informal casual wear.这是假日休闲的惟一去处.It was the only place for off - duty relaxation.随着生活节奏的不断加快, 我们将很快失去休闲的雅趣.As the pace of life continues to increase, we are fast losing the art of relaxation....
Her official number is carved on the port side of the forecabin.这艘船的注册编号刻在前舱的左舷上。The forecabin, with 6ft head-room, also has plenty of room to stand and get dressed.前舱有6英尺高的净空，也有足够的空间供人站立和穿衣服。...