But values are very hard to observe directly.

但是价值非常难以直接观察到。

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Observe directly the stratigraphic structure by drawing the stereoscopic image of reflection surfaces in virtual reality system.

再在虚拟现实系统下对反射面进行立体显示，直观地分析地下地层的结构。

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No interpreters are necessary for each person should observe directly his own activities, not according to any theory or authority.

诠释者是不必要的，因为每个人应该直接观察他自己的活动，而不是根据任何理论或权威。

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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

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

The hype has increased in the last few decades since functional neuro-imaging has enabled scientists to observe directly the activity in the brains of conscious subjects exposed to certain stimuli or engaging in different tasks.

FORBES: Neuroscience And Literary Theory: A Match Made In Nonsense

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