primer pouch

例句：

1. 1. The hikerscarried a primer pouch filled with essentials for the trip.
   徒步者携带了一个装有旅行必需品的初级包。
2. 2. The student neededa primer pouch to carry his booksand supplies.
   学生需要一个初级包来携带他的书和用品。
3. 3. The guide handed out primerpouches containing maps and compasses to each group of travelers.
   导游向每个旅行团分发包含地图和指南针的初级包。