Omicron
n. 希腊字母第15字
🗣️ 情景例句
You're welcome anytime.
欢迎你随时来玩。
Don't they believe it's necessary?
他们难道不认为它是必要的吗？
He was just falling asleep when there was a loud knock at the door.
他刚要入睡，就有人很响地敲门。