Study as if you are always chasing something, fearing you won't catch up, and even if you do, you fear losing it. Describes extreme diligence and a strong desire for improvement in learning or other endeavors.
他对待新知识总是抱着“学如不及，犹恐失之”的态度，所以进步很快。
He always approaches new knowledge with the attitude of "study as if you can never catch up, and are always afraid of losing what you've gained," which is why he makes rapid progress.
Era:
Ancient
Frequency:
Next Idiom