Two, can not directly observe the cutting tool.

不能直接观察到刀具的切削情况。

youdao

We don't directly observe souls with our five senses.

我们无法通过五感直接观察到灵魂。

youdao

You might wonder, well, don't I sort of directly observe it in myself that I have a soul?

你可能会想，难道我自己没有直接观察到我有灵魂吗。

youdao

You might wonder, well, don't I sort of directly observe it in myself that I have a soul?

你可能会想,难道我自己没有直接观察到我有灵魂吗

耶鲁公开课 - 死亡课程节选

We don't directly observe souls with our five senses.

我们无法通过五感直接观察到灵魂

耶鲁公开课 - 死亡课程节选

For the first time, scientists working at the Hubble Space Telescope were able to directly observe a quasar accretion disc.

FORBES: Hubble Telescope Observes Matter Falling Into Black Hole

The equipment setup at the lab not only allows for the plasma to be created, but its properties can also be measured very closely, allowing the scientists to directly observe how matter behaves when its in its plasma state.

FORBES: Scientists Build The World's Most Powerful Laser

Real black holes' light-swallowing abilities make them notoriously difficult to observe directly, though their gravitational effects on their surroundings can be seen.

ECONOMIST: Black holes on a desktop