hither,这里，to,向。引申词义迄今。

1. a hitherto unknown species of moth

迄今仍属未知种类的蛾

2. Hitherto he had experienced no great success in his attempt.

到目前为止,他的尝试还没获得成功.

3. The polytechnics have hitherto been at an unfair disadvantage in competing for pupils and money.

到目前为止，理工专科学校在争取生源和资金方面一直处于劣势。

4. She discovered a world of parties and pleasure she had hitherto only known by hearsay.

她发现了一个以前只是略有听闻的花花世界.

5. The work fills ( in ) a gap which has hitherto existed in our archaeological literature.

这部著作填补了我国考古学文献中的一个空白.