是的，我们在九月开始。

Yes, we started in September.

我们的新学期在九月开始。

Our new term starts in September.

我们的新学期也在九月开始。

Our new term also starts in September.

通常在九月或十月。

It's usually in September or October.

教师节在九月。

Teachers' Day is in September.

学校通常在九月开学。

School usually starts in September.

树叶在九月开始变色。

The leaves start to change color in September.

天气在九月开始变凉。

The weather begins to cool down in September.

我们计划在九月去旅行。

We plan to travel in September.

每年的年度节日在九月举行。

The annual festival is held in September every year.