请帮我翻译一下这两句句子(高一英语)

【小蜜翻译】：
小男孩踮起脚走进阅览室，以确保不打扰其他读者（make sure）
The little boy walked on his tiptoe so as to make sure not to interrupt other readers.

尽管失败了好几次，汤姆仍不放弃实验，因为他相信有志者事竟成（sure）
In spite of several failures, Tom still didn't give up the experiment, for he was sure of success

小男孩踮起脚走进阅览室，以确保不打扰其他读者（make sure）
The little boy walked into the reading room on tiptoe so as not to interrupt other readers.

尽管失败了好几次，汤姆仍不放弃实验，因为他相信有志者事竟成（sure）
In spite of repeated failures, Tom didn't give up the experiment because he was sure that he would make it if he had the will.