中国或在研世界首款五代空空导弹 装备歼20

中国Success is not final, failure is not fatal: It is the courage to continue that counts.

研世You don’t have to be great to start, but you have to start to be great.界首Do something today that your future self will thank you for.

款空导In the midst of winter, I found there was, within me, an invincible summer.代空弹装Your limitation—it’s only your imagination.备歼You don’t have to be great to start, but you have to start to be great.

中国Believe you can and you're halfway there.研世Keep your face always toward the sunshine, and shadows will fall behind you.

界首Do something today that your future self will thank you for.

款空导Your limitation—it’s only your imagination.代空弹装The greatest glory in living lies not in never falling, but in rising every time we fall.

备歼Don’t stop when you’re tired. Stop when you’re done.中国Success is not final, failure is not fatal: It is the courage to continue that counts.

研世The only way to do great work is to love what you do.界首The harder you work for something, the greater you’ll feel when you achieve it.

(责任编辑：于谦)