有一个例子发生在它们收集食物时。
There is an example when they were engaged in food gathering.
收集它们最好的方法是有一个特别的相册，把你的收藏放进去，并写下每件事对你的意义。
The best way to collect them is to have a special album to put your collection in and to write what each thing means to you.
一个组织收集的信息显示，在巴基斯坦，五年级有一半的儿童不懂基础数学，也不会用他们的语言阅读故事。
Information gathered by an organization shows half of all Pakistani children in the 5th grade do not understand basic mathematics and cannot read a story in their language.
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