八 小 時 工 作 制 bā xiǎo shì gōng zuō zhì : eight hour working day

幾 個 小 時 jǐ gè xiǎo shí : several hours

刻 kè : quarter (hour); (a measure word); to carve; to engrave; to cut; oppressive

Big5: , Unicode: 523b (刻),
Links: MT, Cantonese, Ld, Chinese Language

時 [时] shí : O'clock; time; when; hour; season; period

Big5: , Unicode: 6642 (時),
Links: MT, Cantonese, Ld, Chinese Language

四 個 小 時 sì gè xiǎo shí : four hours

小 時 xiǎo shí : hour

一 小 時 yī xiǎo shí : one hour

鐘 [钟] «鍾» zhōng : clock; time as measured in hours and minutes; bell

Big5: , Unicode: 9418 (鐘),
Links: MT, Cantonese, Ld, Chinese Language

鐘 頭 zhōng tóu : hour