pounce on somebody/something
pounce on somebody/something
phrasal verbphr v
a) CRITICIZEto criticize someone’s mistakes or ideas very quickly and eagerly 急于批评〔某人的错误或想法〕
Teachers are quick to pounce on students’ grammatical errors.
老师一眼就能看出学生的语法错误，并立即指正。
b) 
ADVANTAGEto eagerly take an opportunity as soon as it becomes available 抓住〔机会〕
ADVANTAGEto eagerly take an opportunity as soon as it becomes available 抓住〔机会〕 When they offered O'Leary the chance to become manager, he pounced on it.
他们给奥利里一个机会让他当经理，他马上就接受了。
→ pounce on somebody/something at pounce(1)