開口 kāikǒu HSK7 to open one's mouth Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: opening All meanings 21 kāikǒu 21 to open one's mouth 20opening 1 1 sentence for 開口 (kāikǒu — opening) 这些开口不可以被堵塞或遮蔽。 zhèxiē kāikǒu bùkěyǐ bèi dǔsè huò zhēbì. These openings must not be blocked or covered. Source: CCMatrix