n. a social class comprising those who do manual labor or work for wages
n. productive work (especially physical work done for wages)
v. work hard
n. 劳动, 努力, 工作, 劳工, 分娩
vi. 劳动, 努力, 苦干
vt. 详细分析, 使厌烦
1. Labor is essential for building a strong economy.
劳动对于建设一个强大的经济至关重要。
2. Many people work hard in labor-intensive jobs.
许多人在劳动密集型工作中努力工作。
3. She believes that hard labor leads to success.
她相信辛勤劳动会带来成功。