This technique is useful but it has its limitations.

这种技术实用，但也有局限性。

He knows his limitations as a writer.

他知道自己作为一个作家的局限性。

Mira and co point out that these early models had some serious limitations.

米拉及其合作者指出，这些早期模型确实有些严重的局限性。

Technology may be able to help students with some things but it has many limitations.

技术也许可以帮助学生，但是也有很多局限性。

However, the researchers caution that their study, while observing a real effect, has limitations.

然而，研究人员警告称，他们的研究虽然观察到真实的效果，但具有局限性。