/sʌk/ V-T/V-I If you suck something, you hold it in your mouth and pull at it with the muscles in your cheeks and tongue, for example in order to get liquid out of it; They waited in silence and sucked their sweets; 吮吸 Life is too short to spend time with people who suck the happiness out of you. V 不擅长？ Why humans suck at critical thinking? 不擅长批判性思维；