Sigmic
a. ∑粒子的, 含∑粒子的
🗣️ 情景例句
Have a safe trip!
一路平安。
It's a pain in the neck having to meet them at the airport.
必须到机场去接他们，真讨厌。
What do you want to do next September? Do you have any plans?
你今年9月打算干什么？你有什么计划吗？