characterized by effort to the point of exhaustion; especially physical effort;
\\\"worked their arduous way up the mining valley\\\"
\\\"a grueling campaign\\\"
\\\"hard labor\\\"
\\\"heavy work\\\"
\\\"heavy going\\\"
\\\"spent many laborious hours on the project\\\"
\\\"set a punishing pace\\\"
造句
用作形容詞(adj.)
Digging the garden is a backbreaking job. 翻整花園的地是件累人的活。