即使学术再精湛，如果道德不足，就像在流沙上建造高楼，稍有震动就会倒塌。

The best technology disappears into the background, enhancing our lives without demanding attention.

The core of Pinduoduo is "group buying," allowing users to participate in shopping through social means.

过去是一个不同的国度，他们做事的方式不同。