alternating current
US /ˈɔːl.tərˌneɪ.tɪŋ ˈkɝː.ənt/
UK /ˈɔːl.tərˌneɪ.tɪŋ ˈkɝː.ənt/

1.
交流电
an electric current that reverses its direction many times a second at regular intervals, typically used in power transmissions
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Most household appliances run on alternating current.
大多数家用电器都使用交流电。
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The power grid supplies alternating current to homes and businesses.
电网向家庭和企业提供交流电。
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