Monotube
单管的, 直流的
🗣️ 情景例句
She's a smart young lady, and very nice.
她是个聪明的年轻姑娘 而且很善良。
Joe was really a rat.
乔是个十足的大骗子。
I'm calling to see what happened to our last order.
我打电话来是想知道上次订的货怎么样啦？