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n. 两者择一, 供替代的选择
a. 两者择一的, 供选择的
【计】 选择对象
【医】 交替的, 更迭的, 互生的(植物)

alternative budget alternative design alternative form alternative synthesis alternative segmentation alternative standard alternative pack alternative tax alternative variation alternative texts alternative uses alternative condition alternative versions alternative trait alternative share alternative version alternative substrate alternative education alternative remedy alternative method