这对餐馆和商店等企业很有用，因为它提供了吸引顾客的新途径。

This can be useful for businesses such as restaurants and stores because it offers a new way to attract customers.

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怪癖很有用不仅因为它能很让人娱乐，更因为它象征你在看世界的方式上有了一个有意义的不同。

Eccentricity is valuable not just because it can be quite entertaining, but because it represents a significant difference in the way you view the world.

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原理是，如果其他人因为你的站点很有用或者很娱乐而把它推荐给自己的用户，那么你的站点就是有价值的。

The idea here is that if other people find your website helpful or entertaining enough to recommend that their visitors check it out, it must be worthwhile.

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So if you learn how to look at films and if you are a real film buff, even bad movies will be useful, because they will give you things to develop your sensitivity toward the nature of film itself.

所以如果你们可以学会如何看电影,如果你们真的对电影了如指掌，即使是不好的电影也会很有用，因为,它会培养你对,电影本质的敏感程度。

麻省理工公开课 - 电影哲学课程节选

Look in the local newspaper, see where they're advertising because it's always really helpful.

看看当地报纸吧，看看他们在为哪里做广告，因为它一直都很有用。

在外国说英语的方法 - SpeakingMax英语口语达人