下水道堵塞了。
The drain is clogged.
to clog up; blockage
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
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Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
下水道堵塞了。
The drain is clogged.
路上堵塞得厉害。
The road is badly blocked.