to throw
to accuse
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→tou2su4 • tóusù
to complain
complain, complains, complained, complaining, complaint
旅客 有 投诉 权。
Customers have the right to complain.
他 打电话 向 公司 投诉 了。
He called to complain to the company.
乘客 可以 在 网站 上 投诉。
Passengers can complain on the website.