R-s system
[化] R-S命名法
🧩 词语组成解析
🗣️ 情景例句
Grandpa wanted to lend us the money to buy one,
爷爷要借给我们钱去买房子，
An ass endures his burden,but not more than his burden.
驴子能负重，过重也难负。
It's to the north of England; it's part of Britain.
它位于苏格兰的北部，是不列颠的一部分。