The letter "O" is shaped like a circle.

字母“O”的形状就像一个圆圈。

youdao

Mary was writing a letter to her friend at 8:00 o 'clock last night.

昨晚八点钟玛丽在给她的朋友写信。(信不一定写完，只说明了动作的延续)。

youdao

Mary was writing a letter to her friend at 8:00 o 'clock last night.

昨晚八点钟玛丽在给她的朋友写信。(信不一定写完，只说明了动作的延续)。

youdao