Defense secretary
国防部长
🧩 词语组成解析
🗣️ 情景例句
It's important for you to keep a cool head at this moment.
这时候保持头脑冷静是很重要的。
In secondary school, children study history and geography.
中学的小孩会读历史和地理。
Who jumped highest?
谁跳得最高？