| 单词 | converters |
| 例句 | DEFINITIVE EXAMPLES 权威例句Since the catalytic converters that clean up car emissions are made from platinum, the price of the precious metal has increased.] 因为清洁汽车排气的催化转化器由白金制成，这一名贵金属的价格已经上涨了。剑桥国际 |
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