请问这个俚语 roll off one's back

请问这个俚语 roll off one's back 请问roll off the 熟悉nba的帮忙啊 请问:off one's 请问roll-on/roll-off vessel是滚装船的意思吗? 请问roll-on/roll-off vessel是滚装船的意思吗? roll off the production roll one's one day one dollar请问这句美国俚语翻译成中文是什么呢? roll one's eyes是什么意思 roll over 看到一个句子,说The danger is that they may go much further,cutting off new lending or refusing to roll over outstanding loans,even to solid borrower.不知道这个roll over outstanding loans怎么翻译? 俚语never off the table什么意思?俚语,什么意思? wax one's 似乎是俚语. 英语翻译请问这句话怎么翻译?Lenny was one-bit performer.这里的one-bit 是不是俚语啊? 英语翻译Nearly all systems are built according to the “roll-on/test/roll-off” principle.该句中“roll-on/test/roll-off”是什么意思? roll roll roll clean bill of health请问大家有谁知道这个俚语的来源,并用这个俚语举两个例子好吗?在此小弟先行谢过!