"the union's support had been in lockstep for years"
"the prisoner's ankles were so chained together that they could only march in lockstep"
《柯林斯英汉双解大词典》
《牛津词典》
《牛津词典》
《柯林斯英汉双解大词典》
《柯林斯英汉双解大词典》
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