Safety alarm
[化] 安全警报器
🧩 词语组成解析
🗣️ 情景例句
I have been a poor student of foreign languages.
外语就学得不好。
Two dollars and seventy-five cents.
二美元七角五分。
runs the gentle slope of the continental shelf, geologically part of the continents.
从地质学上来说，它是大陆的一部分。