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laborious [lə'bɔ:rɪəs] adj.
gen. 艰巨〔难，苦〕的; 辛苦的; 麻烦的; 勤劳的
agric. 劳动的; 艰苦的
met. 费力的; 繁重的
laborious: 2 phrases in 1 subject
Agriculture2

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