stick at 1. 堅持做 She often sticks at her work more than ten hours a day.她常常一天一工作就是十小時以上。

stick by 1. 忠於 They vowed to stick by one another no matter what happened.他們立誓生死與共。 2. 堅持 He sticked by his beliefs. 他堅持自己的信念。

stick to1. 忠於;信守 He is a man who sticks to his friends.他是個忠於朋友的人。