单语范例（未经PONS编辑处理）
英语
- As the process of formation continues, typically a trough will form around the base of the yardang.en.wikipedia.org
- He contrasts the ridges with another bedrock form called a yardang, which has been carved over time by headwinds.www.dailymail.co.uk
- A yardang has a wide, blunt leading edge in the face of the wind, and its sides are tapered so that it resembles a teardrop.www.dailymail.co.uk
- Most yardang fields are in sand-poor areas, but the associated troughs, especially in grooved terrain, may be invaded by sand.en.wikipedia.org
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