Underproper
vt. 从下面支撑；支持；维持：
🗣️ 情景例句
Now we can really start the party!
现在我们可以真正开始舞会了！
I want to make a local call.
我要打个市内电话。
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。