Substructures
n. 基础；信念；底部构造
🗣️ 情景例句
She was still beautiful at the age of forty.
她活到四十岁仍然很美。
We would be glad to start business with you.
我们很高兴能与贵公司建立贸易往来。
OK. Thank you. Goodbye!
好吧，谢谢你。再见！