记忆方法
将“heavy-duty”联想成一个坚固耐用的工具，比如一辆重型卡车或一套重型设备，这些物品因其耐用性和承重能力而得名“heavy-duty”。通过这种形象化的联想，可以记住“heavy-duty”表示的是坚固耐用、重量级的意思。
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中文词源
heavy-duty 重型的，结实的
heavy,重的，duty,职责，责任。比喻用法。
英语词源
- heavy-duty (adj.)
- "durable, strong," 1914; see heavy (adj.) + duty.
权威例句
- 1. I don't want any more of that heavy stuff.
- 我再也不想碰那种麻烦事了。
- 2. The outside air was heavy and moist and sultry.
- 外面的空气沉滞、潮湿而闷热。
- 3. I slowly zipped and locked the heavy black nylon bags.
- 我慢慢地把那些沉重的黑色尼龙袋的拉链拉上并锁好。
- 4. The city has been flattened by heavy artillery bombardments.
- 城市已被猛烈的炮火夷为平地。
- 5. There was a heavy thudding noise against the bedroom door.
- 卧室门上发出一声沉重的撞击声。