Megaparsec
n. [天]百万秒差距
🗣️ 情景例句
My father sends his regards to you.
我父亲向你问好。
The wife is the key of the house.
妻子是一家的钥匙。
But suppose the earth could be covered with sensors spaced one foot apart,
假设地球上可以布满传感器，每个相隔1英尺，