Optional facility
[计] 任选设施
🧩 词语组成解析
🗣️ 情景例句
Can you finish the work by five o'clock tomorrow?
你能在明天五点钟之前做完这项工作吗？
I ought to see a doctoe at once.
我应该立刻去看医生。
and the outer planets have temperatures near absolute zero and hydrogen-dominated atmospheres.
除此以外，太阳系的其他行星的温度都接近绝对零度，并围绕着以氢气为主的大气层。