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单词 submain
释义 sub·main
\ˈ ̷ ̷+ˌ-\ noun
Etymology: sub- + main
: a main (as in a sewer, gas, electrical, or drainage system) having a number of lesser mains feeding into or branching from it but being itself subsidiary to a larger main
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更新时间:2024/9/22 13:29:38