toil like a beast of burden be overburdened carry a heavy load on one's back like an ox like loads on the backs of oxen like beasts of burden
toil like a beast of burden
be overburdened
like beasts of burden
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英语词典收录了最新的汉英词典和英汉词典，总共有200多万个词条，词库仍在不断更新中。
