unclog
🇺🇸
/ˌʌnˈklɑːɡ/
🇬🇧
/ˌʌnˈklɒɡ/
to remove a blockage from something, like a pipe
I needed to unclog the drain so the water could flow freely.
我需要疏通下水道,這樣水才能自由流動。