Meaning of āo:
熬
to boil; to simmer; to cook on a slow fire; to extract by heating; to decoct; to endure
Dà chú zhèng zài bǎ gǔtou fàng zài guō lǐ cháng shíjiān mànmàn áo.
大厨正在把骨头放在锅里长时间慢慢熬。
The chef is slowly simmering the bones in the pot for a long time.
Tā zhèngzài chúfáng lǐ màn huǒ áo tāng.
她正在厨房里慢火熬汤。
She is slow-cooking soup in the kitchen.
Zài kùnnán de shíqī, wǒmen bìxū xuéhuì rúhé áo.
在困难的时期,我们必须学会如何熬。
In difficult times, we must learn how to endure.