Lactone ring five membered
[建] 五节内酯环
🧩 词语组成解析
n. [化] 内酯
ring
[riŋ]
n. 戒指，指环;铃声，钟声;环形物;拳击场;
vt. 形成环状;环绕;使（例如铃）响;打电话给;
vi. 按铃，敲钟;回响;成环形;
five
[faɪv]
num. 五，五个;与某人击掌问候（或庆祝胜利）;第五;
n. 五，五个;5美元钞票;[板]得五分;
adj. 五的;五个的;
a. 分成几部分的；由几个部分组成的；有手脚的
🗣️ 情景例句
Just make the few changes I suggested and your letter will be perfect!
只要改动我提到的个别地方，你的信就会很完美了。
Prompt delivery would be necessary as we have a fast turnover in this trade. We would therefore need your assurance that you could meet all delivery dates.
即期交货很重要，因为这种货流转很快。所以我们需要你方保证及时交货。
Look at the rain! It's heavy, isn't it?
瞧这雨！下这么大，是吧？