Tcnb
[建] 四氧硝基苯
🗣️ 情景例句
What's your regular practice concerning terms of payment?
你们常用什么付款方式？
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
It's much cheaper to camp than to stay in a hotel.
露营比住旅馆要便宜多了。