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Once for all 一劳永逸
23-04-07
On the whole 总的看来
23-04-07
On the other hand 另一方面
23-04-07
On the contrary 恰恰相反
23-04-07
On second thoughts 经重新考虑后
23-04-07
On one's own 独立地
23-04-07
On loan to 借给
23-04-07
On guard 站岗
23-04-07
On earth 到底
23-04-07
Off duty 下班
23-04-06