理解免疫系统就是理解解锁新癌症疗法的关键。
"Understanding the immune system is understanding the key to unlocking new cancer therapies."
"Friendship isn't about who you've known the longest. It's about who walked into your life and said, 'I'm here for you,' and proved it."
若要苗条的身材，把你的食物分享给饥饿的人。
He strolled like a man in the park without a care or a worry in the world. Like he had>