New words：

amount /əˈmaʊnt/ n.数量；金额；数额；总量

a large/small amount of + 不可数名词
an amount of time / money / information
一段时间；一笔钱；一些信息

Sample Sentences：

There is a small amount of water in the bottle.
She saved a large amount of money for her trip.
People should decrease the amount of fat they eat.

decrease [dɪˈkris] v.降低；减少；缩小；减弱

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