🧩 词语组成解析
🗣️ 情景例句
when I was about eighteen years old.
那时我差不多十八岁。
Have you marketed your product yet?
你们的产品尚未推出市场吗？
he hardly ever used it, preferring always to go on foot.
但却很少使用，常常喜欢以步代车。