PU2 U4 Machines in our homes 跨学科
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01
machine
/məˈʃiːn/
n. 机器
Machines make our lives easier.
02
simple
/ˈsɪmpl/
adj. 简单的
They can be simple machines with only a few parts.
03
complex
/ˈkɒmpleks/
adj. 复杂的
They can be complex machines with lots of parts.
04
part
/pɑːt/
n. 部件
A bike is a complex machine with many different parts.
05
energy
/ˈenədʒi/
n. 能量
Simple machines always need our energy to make them work.
06
push
/pʊʃ/
v. 推
We have to push or pull them.
07
pull
/pʊl/
v. 拉
We have to push or pull them.
08
swing
/swɪŋ/
n. 秋千
A swing in a park is a simple machine.
09
bike
/baɪk/
n. 自行车
A bike is a complex machine with many different parts.
10
electricity
/ɪˌlekˈtrɪsəti/
n. 电
Many complex machines need electricity to work.
11
computer
/kəmˈpjuːtə/
n. 电脑
Many complex machines need electricity, like a computer.
12
easier
/ˈiːziə/
adj. 更容易的
Machines make our lives easier.
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