Hubble's constant
na. 【天】哈勃常数\\n
🧩 词语组成解析
🗣️ 情景例句
The train is just up the street.
地铁车就在街的那一头。
A man becomes learned by asking questions.
要长学问，就得多问；多问则业精。
'I am sorry,' he said.'I do not speak English.'
”很抱歉，“他说，”我不会讲英语。”