1590s, "to exert one's strength upon," from be- + labor (v.). But figurative sense of "assail with words" is attested somewhat earlier (1590s); and belabored is attested from mid-15c. with a sense of "tilled, cultivated."
belabor 双语例句
1. Don't belabor the point.
别再罗嗦这事儿了.
来自《简明英汉词典》
2. He seems to be looking for a man of straw to belabor.