The S9's are the only smartphones out there with a dual aperture which is very cool and the widest aperture on a smartphone at 1.5 which is great for low light photography.

S9是市面上唯一一款双光圈智能手，这点非常牛逼，这款智能手大光圈是1.5，这对于低照度摄影非常有帮助。

Definitely not a wallflower. It's so bright in our sky not just because it's the closest planet to us, but because it's the most reflective planet.

它毫不羞涩，明亮地挂在天不仅仅因为离我们近更多是因其高反照度。

To measure how bright it is, he borrows a light meter from a facilities guy at Yale, and he does some science.

为了测量光线亮度， 他从耶鲁大学一个设人员那里借来了一台照度计，并进行了一些科学测试。

So it may be a sort of sweet spot in the intensity of light, the illuminance.

因此，这可能是光照强度或照度一个甜点区域。

And it is so funny for me to think that at night he was going home and measuring ancient lamplight in his dining room with a light meter.

想想他晚上回家后，在餐厅里用照度计测量古代灯光，这真让我觉得好笑。

So he does this, the light meter and the ancient lamp, and he has his numbers, but now he has to figure out a way to compare the price of light over thousands of years.

所以他做了这些， 用光照度计和古老灯，得到了一些数据， 但现在他需要找出一种方法来比较几千年来光价格。