(used before a disyllabic verb, often after an adverb like 不bù, 大dà, 稍shāo etc, to indicate that the action applies to sth previously mentioned, as in 稍加改良shāojiāgǎiliáng "make some minor improvements to (it)")
3
莱
lái
name of weed plant (fat hen, goosefoot, pigweed etc)