Spirane structure
[化] 螺环结构; 螺旋结构
🧩 词语组成解析
螺烷
🗣️ 情景例句
No. This is five-two-one double eight three-five.
不，这里是521-8835。
The two parties involved in a contract have the obligation to execute the contract.
合同双方有义务履行合同。
That's not so good.
这样不太好吧。