2-methyl-but-3-yn-2-ol 甲基丁炔醇
4-dichloro-but-2-ene 4-二氯-2-烯烃化合物
a centipede dies but never falls down 百足之虫死而不僵
Acts but does not fight 为而不争
all but 几乎; 差不多
all but dissertation (ABD) 准博士
anything but 决不
Beauty is but skin deep 美丽只是外表
body mass index BUT 体质指数
bounded-but-unknown uncertainty 区间不确定性
Break-up time of tears BUT 泪膜破裂时间
but brazing 对头硬焊
BUT BUTton 按钮
but for 要不是
but I sense 惟我意识
but net V字型建网
but now 刚刚
but proof safety 可证明安全
but that 若非