修复老教堂里那幅残破的壁画是一项极其艰苦的工作。
Restoring the crumbling fresco in the old cathedral proved an arduous undertaking.
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解释
arduous 形容需要极大技艺、耐心和体力的精细修复工作。
Restoring the crumbling fresco in the old cathedral proved an arduous undertaking.
arduous 形容需要极大技艺、耐心和体力的精细修复工作。