1.  don't promise
2.  without guarantee
3.  warranty is not covered
4.  cannot be guaranteed

• 1. 不保证: not warranted
• 2. 不保证商品无瑕疵: with all faults
• 3. 不保证治好: no guarantee

更多释义

• 1.“那么，”班杰说，“你不保证再也不碰汽车了？”
  "Then you don't promise," said the Badger, "never to touch a motor-car again?"
  dict.yoduao.com
• 2.不保证一定能成功。
  Success is not guaranteed.
  dict.yoduao.com
• 3.你们看这些不保证那个，是吗？
  You see these don't guarantee that. Do they?
  dict.yoduao.com

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