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聊天 liáotiān to use instant messaging
听 listen:

话题 topic:
信息技术 (Information Technology)
例子 examples:
Zhǐ xū diǎnjī yīxià shǔbiāo, jiù kěyǐ yǔ diànzǐ yóujiàn shōu jiàn rén liáotiān.
It's just one click to chat with the people you already email.
听 (listen):

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