Spiran
[机] 螺环化合物
🗣️ 情景例句
Hello, nice to meet you. By the way, nice shoes you have.
你好，很高兴见到你。 顺便提一下， 你的鞋子很漂亮。
Referring to your inquiry letter dated 29th September, we are offering you the following subject to our final confirmation.
关于贵方9月29日的询价信，我方就如下产品报价，以我方最后确认为准。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。