我了解。
Wǒ liǎojiě.
I understand.
我了解你。
Wǒ liǎojiě nǐ.
I understand you.
我想了解公司。
Wǒ xiǎng liǎojiě gōngsī.
I want to learn about the company.
他去了解情况。
Tā qù liǎojiě qíngkuàng.
He went to find out the situation.