Rheostats
n. [电] 变阻器；[电] 可变电阻（rheostat的复数形式）
🗣️ 情景例句
I really appreciate you coming over to help me with my math.
我真的很感谢你过来帮我补习数学。
What do you think?Is that right?
你认为什么?那是正确的？
Something must be done about it.
必须得想个办法。