Spectroreflectometer
光谱反射计
🗣️ 情景例句
Do we have to pre-book tours, or can we get them on site?
我们必须预定行程， 还是到那个地方再说？
To be virtuous is to do good.
行善是美德。
Turning back down the main street,
便掉转身子，沿着那条主要街道加快步伐，