这种材料的设计允许空气自由流通。

The design of this material ___permits air to flow freely.

学校允许学生在图书馆自习到晚上10点。

The school ___permits students to study in the library until 10 p.m.

要在这座城市钓鱼，你必须先获得钓鱼许可证。

You must obtain a fishing ___permit before fishing in this city.

这种通行证允许你在节假日免费停车。

This pass ___permits you to park for free on holidays.