get to the heart of the problem; see clearly the crux of the matter; see clearly where the vital point lies
? 只有善于思考的人，才能～。Only those who are good at thinking can see clearly where the vital point lies.
洞見癥結(jié)dònɡ jiàn zhēnɡ jié
比喻觀察敏銳，看到了問題的關(guān)鍵。find out of the origin of a disease, see clearly the crux of the matter, get to the heart of the problem