大约

tā dà yuē yǒu kāi wài le

她大约有50开外了。

She is approximately over fifty.

dà yuē yī xiǎo shí lù chéng

大约一小时路程。

It's about half an hour's journey.

dà yuē yǒu gè rén

大约有20个人。

There were around 20 people.

tā dà yuē shì huí jiā qù le

他大约是回家去了。

He has probably gone home.

tā dà yuē bù huì lái le

她大约不会来了。

She probably won't come.

tā dà yuē shì kāi huì qù le

她大约是开会去了。

She has probably gone to a meeting.