D-structure
深层结构
🧩 词语组成解析
🗣️ 情景例句
Well, a wristwatch,
嗯，一个手腕表，
He went to the post office to mail a letter.
他去了邮局寄信。
An advertisement which begins with the magic word FREE can rarely go wrong.
凡是用“免费”这个神奇的词开头的广告很少会失败的。