n.唱歌,鸟鸣,<物,无>振鸣,(机器或系统)技术先进
v.唱,歌唱(sing的现在分词),(鸟)鸣,嗡嗡叫,呜呜作响
adj.唱歌的,音乐般的
These days work plays an important part in a single woman's life.
现在,工作在单身女性的生活中起着重要作用。
The price of a single ticket is thirty-nine pounds.
单程票的价格是39英镑。
We were walking in single file to the lake.
我们正排成一列朝湖边走去。