Structon
结构单元(指无定形固体, 例如玻璃中的原子结构单元)
🗣️ 情景例句
You should save some money in case of urgent need.
你应该存点钱以备不时之需。
Help yourself, please.
请自己用。
Now she's holding it for Jim. Jim is climbing up the ladder.
现在她在给吉姆扶着梯子。吉姆正在爬上梯子。