我不害怕失败，我害怕不去尝试。

短视频是时代的产物，它降低了表达的门槛。

The more we learn about sensory biology, the more we realize how intricate and finely tuned our nervous system is.

When you arrive at your room in a hotel， locate the emergency exits. It only takes a minute.

CRISPR提出的伦理问题不是障碍，而是必要的对话。