三分之一无子女的受调查者选儿子，三分之二的人没有偏好，只有不几个人选择了女儿。

One third of those without children said a son, two-thirds had no preference and only a residual said a daughter.

youdao

没有关于一个人类被迫保持不睡的时间久到死亡的记录，但是有一种叫做致命性家族失眠症的遗传病似乎表明人类无睡眠时间是有极限的。

There are no records of a human having been intentionally kept awake long enough to kill them, but a hereditary disease called fatal familial insomnia suggests there is an ultimate limit.

youdao

对有缺陷的消费者，那些当代的没有者来说，不购物是一种不完满的生活——以及自身的虚无和一无是处的——刺耳而令人痛恨的污名。

For defective consumers, those contemporary have-nots, non-shopping is the jarring and festering stigma of a life un-fulfilled -and of own nonentity and good-for-nothingness.

youdao

And that's really neat to think about, because photons, of course, are massless particles, they have no mass, so it's neat to think about something that has no mass, but that actually does have a momentum.

而且那真的不容易想明白，因为光子，当然是无质量的粒子，它们没有质量，所以这个真的不容易想明白,一些物体没有质量，但是它们事实上确实有动量。

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