Underproper
vt. 从下面支撑；支持；维持：
🗣️ 情景例句
I did.
看到了。
Waste of time is the most extravagant and costly of all expenses.
浪费时间是一切花费中最奢侈豪华的费用。
She's a new student. She's American.
她是个新来的同学，是个美国人。