Meaning of jiāo huàn:
交换
to exchange; to swap; to switch (telecom); to commute
Tāmen jìhuà zài huìtán zhōng hùxiāng jiāohuàn yìjiàn.
他们计划在会谈中互相交换意见。
They plan to exchange opinions with each other during the meeting.
Wǒmen kěyǐ zài huódòng jiéshù shí jiāohuàn lǐwù.
我们可以在活动结束时交换礼物。
We can swap gifts at the end of the event.
Liǎng wèi péngyǒu zài jùhuì shàng jiāohuàn le diànhuà hàomǎ.
两位朋友在聚会上交换了电话号码。
Two friends exchanged phone numbers at the party.
Wǒmen zài shìchǎng shàng jiāohuàn le jǐ gè wánjù.
我们在市场上交换了几个玩具。
We exchanged a few toys at the market.
commutative (math)
Zài shùxué zhōng, jiāfǎ shì yī gè jiāohuàn yùnsuàn.
在数学中,加法是一个交换运算。
In mathematics, addition is a commutative operation.