单词：odorless bitumen
odorless bitumen的用法和样例：
例句
- Polypropylene is usually colorless solid translucent, odorless drug-free.聚丙烯通常为半透明无色固体，无臭无毒。
- They are odorless and flavorless sedatives which can be easily mixed into a drink or punchbowl.他们是无味无臭和镇静剂可轻易混入饮料或潘趣酒杯。
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