Definition
to obstruct a narrow space by filling it, so that nothing can pass through
堵塞，阻塞
He blocked up the drain pipe with sand to prevent water from flowing through.
他用沙子堵住了排水管，防止水流通過。
She blocked up the narrow hallway with furniture.
她用家具堵住了狹窄的走廊。
During the construction, the workers blocked up the passageway to ensure safety.
施工期間，工人們堵住了通道以確保安全。