verb · to cast a ballot, a glance, or a shadow

大家都投了赞成票。

verb · to throw an object in a specific direction or throw oneself into water

他把球投进了篮筐。

verb · to send or deliver a letter or manuscript

他给杂志社投了一份稿件。

verb · to invest money or put a coin into a slot machine

他在股市里投了不少钱。

verb · to rinse clothes in water

衣服洗好了，再投两遍。

verb · to go to a person or place for help or protection

他千里迢迢来到京城，想要投在名师门下。