行李箱里有一些旅行用品。

The suitcase has some travel ___essentials.

耐心是成功的关键要素之一。

Patience is one of the ___essentials for success.

出门旅行前，别忘了打包洗漱用品和其他必需品。

Don't forget to pack toiletries and other ___essentials before your trip.

这本手册讲解了摄影的基本原理。

This handbook explains the ___essentials of photography.