straight tap-in
... straight sleeve 直套筒 straight tap-in 直接分管[方形风管道] straight-through hole 直通孔 ...
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甚至没有人发出警告的呼喊，被拆除的部分管道就被直接倾倒在了人行道上。
Dismantled parts of a pipe were dumped on sidewalk, thus besides there were no warning shouts.
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