H-r diagram
＝Hertzsprung-Russell diagram
🧩 词语组成解析
🗣️ 情景例句
You've come up with a good idea.
你想出来的主意好极了。
I have no choice.
我别无选择。
Once he had done this, he had been able to turn on the supply.
一旦他接上了接头，他就能够打开供气阀。