怎样练习微笑：虽然这需要勇气，但是对陌生人微笑是让他们知道如果你和我说话我会友好以待的上策。

How to practice it: Even though it may seem bold, smiling at strangers is the top way to let them know it's safe to break through.

youdao

怎样练习微笑：虽然这需要勇气，但是对陌生人微笑是让他们知道如果你和我说话我会友好以待的上策。

How to practice it: Even though it may seem bold, smiling at strangers is the top way to let them know it's safe to break through.

youdao