The only part of human body that has no blood supply is the cornea. It takes its oxygen directly from the air.

人体中唯一没有血液供应的是角膜。角膜直接从空气中获得氧气。

所以角膜移植能配型固然好，实在配不了也是唯一一种不是必须配型的器官移植手术，成功率位于其他同种异体器官移植之首。

It is impossible to sneeze and keep one's eyes open at the same time.

睁着眼睛打不了喷嚏。

马上决定下次打喷嚏的时候注意试一下。

The sound heard by a listener when holding a seashell to his ear does not come from the shell itself. It is the echo of the blood pulsing in the listener's own ear.

将一只贝壳贴近耳朵，这时听到的声音不是贝壳本身发出的，而是听者自己耳朵中血流脉搏的回声。

“听海的声音”浪漫被破除。

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