Kerncol
断层外侧洼
🗣️ 情景例句
He went to Canada on business.
他因公赴加拿大。
All are not merry that dance lightly.
表面高兴的，未必都快乐。
Yes, he did.He telephoned at nine o'clock.
是的，打了。他在9点钟又打电话。