Atom structure
[化] 原子结构
🧩 词语组成解析
🗣️ 情景例句
How much notice of cancellation is necessary to get my deposit back?
想把定金拿回来，要提前多长时间通知你才行？
Short accounts make long friends.
帐算清，交情深。
When they had all made themselves comfortable, a stranger appeared.
当他们都已安排舒适时，一个陌生人出现了。