warranty
n
1 [C, U] (written or printed) guarantee, esp one given to the buyer of an article, promising to repair or replace it if necessary (商品的)保证书, 保单, 保证
It is foolish to buy a car without a warranty. 购买没有保单的汽车是愚蠢的.
The machine is still under warranty. 这台机器仍在保修期内.
2 [U] (fml 文) authority 权威; 根据
What warranty have you for doing this? 你这样做有什麽根据?
Now, this is the chemistry lab. Have you been in this lab before?
好啦,这是化学实验室。你们以前到过这个实验室吗?
You were very kind. You brought out all your jewellery and you told me I could take anything I wanted. There were so many beautiful things that it was hard to choose. And then I saw a lovely diamond necklace with a big blue stone in the centre.