Bû-sán-kai-kip (proletariat): kin-kù Marx-chú-gī ê lūn-soat, tī Chu-pún-chú-gī siā-hōe lāi-té, ū-ê lâng bô ka-kī ê seng-sán chu-gôan, óa-khò chhut-bōe lô-tōng-le̍k (Hàn-jī: 劳動力) teh seng-chûn, cho-siū tio̍h Chu-sán-kai-kip ê pak-siah. In to̍h-sī kang-lâng.