Hello, I'm glad to meet you. I've heard so much about you.
你好, 很高兴见到你。 久仰, 久仰。
I often brush my teeth in the morning.
我常常在早上刷牙。
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.