单词：sprinkler irrigation system
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在今天我们要讲的两个习惯用语里，一个关键的字就是：pin。Pin这个字单独用的时候可以解释为：别针。但是，pin这个字也有不少和其他字合在一起用的时
美国习惯用语
UNIT FIVE Instruction [00:03.42]Number 1 Look at the eight pictures below. [00:08.52]You will hear six people,each one explaining how to use one of these machines. [00:14.68]Write down th name of the machines in the order of the description. [00:19.7
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Tomorrow is the first day of school. Barbara looks at her backpack. It has holes. It is dirty. She needs a new one. Her mom takes her shopping. There are so many backpacks. One backpack has yellow stars. Another one has rainbow stripes. Another one h
英语第2级听力-English Level 2
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Explanation: The U.S. flag is often called the Stars and Stripes, because those words describe what the flag looks like. The flag has 13 stripes, which are horizontal lines (or lines that run from left to right). The stripes alternate between red and
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