单语范例（未经PONS编辑处理）
Moored ships could then either unload their cargo directly onto the roadbed or lower it down onto waiting vehicles via their heavy-duty booms.
en.wikipedia.org In 1985 medium-duty truck production was consolidated with heavy-duty truck production, and the plant was renovated and re-tooled to produce full-size pickups.
en.wikipedia.org Ambassador base models were offered to fleet buyers with various police, taxicab, and other heavy-duty packages.
en.wikipedia.org Among plastic models, how heavy-duty the plastic is varies.
en.wikipedia.org The more expensive, heavy-duty versions are motor-driven (usually by an electric motor).
en.wikipedia.org