Omicron
n. 希腊字母第15字
🗣️ 情景例句
Hi!
嗨！
How long does it take for a letter to get to California ?
一封信到加利福尼亚要花多长时间？
Once he had done this, he had been able to turn on the supply.
一旦他接上了接头，他就能够打开供气阀。