单语范例（未经PONS编辑处理）
Due to the possibility of flash flooding, residents were to unclog and free up all waterways around their homes.
en.wikipedia.org Try pouring vinegar down your drain to unclog the grease buildup.
www.gastongazette.com Anyone, who can help unclog this bottleneck, held the key to a multi-billion dollar bounty.
en.wikipedia.org City firefighters worked to unclog flooded storm drains behind a seven-foot-high, 1,000-foot-long temporary retaining wall reinforced by gravel and sandbags.
www.dailymail.co.uk The stents, meant to unclog arteries of the heart, have become a major source to make a fast buck for many hospitals in the capital.
www.thehindu.com