n.其它選擇；備選方案
名詞alternative的復數(shù)形式.
They resisted the introduction of impractical alternatives. 他們抵制采取那個不切實際的備選方案。
It also includes a consideration of possible alternatives, such as a concrete gravity dam or an earth-fill embankment dam. 還要考慮到可能的備選方案，比如是選擇混凝土重力壩還是選擇填土筑堤大壩。
