"I saw all these ships waiting out there,I am guessing, waiting their turns to load and unload the cargo, so,I said,Why do the ships come into the harbor?" Why not have the harbor go out there and bring the goods in?'" Researchers describe the mobile harbor as a lean, light system for unloading container ships even if the coastal area is too shallow for them to dock.

VOA: standard.2010.01.04

Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.

吸收就是发射的逆过程,与从一个高能量到低能量不同，当吸收光时，我们从低能量开始,吸收能量到一个更高的能量。

麻省理工公开课 - 化学原理课程节选

Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.

吸收就是发射的逆过程,与从一个高能量到低能量不同，当吸收光时，我们从低能量开始,吸收能量到一个更高的能量。

麻省理工公开课 - 化学原理课程节选