Pentamethylene
n. [化]环戊烷
🗣️ 情景例句
Is everything OK?
一切都好吗？
First, Mr. Stone Lee, our sales manager, will make a few remarks.
首先，请我们销售经理世通先生发表讲话。
is to make your interests gradually wider and more impersonal,
就是逐渐使自己的兴趣更加广泛，逐渐摆脱个人狭小的圈子，