“先前”的英语可以翻译为：efore，previously，antecede，anteriority ...

“先前”的反义词：后来。...

允许考虑先前的法律。It was permissible to take account of antecedent legislation.他把先前检查过的那些口袋又查了一遍，毫无收获。Uselessly, he checked the same pockets he'd checked before.昨天的投票本身就是放弃先前所留退路的做法。Yesterday'svote itself was a retreat...

“先前”的拼音为：xiān qián...