laborious是什么意思(laborious的用法)
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一、laborious是什么意思
1、laborious 辛苦的
2、来自labor,劳动,辛劳。
二、laborious的用法
1、laborious (adj.)
2、late 14c., "hard-working, industrious," from Old French laborios "arduous, wearisome; hard-working" (12c., Modern French laborieux), from Latin laboriosus "toilsome, wearisome, troublesome," from labor (see labor (n.)). Meaning "costing much labor, burdensome" is from early 15c.; meaning "resulting from hard work" is mid-15c. Related: Laboriousness.
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