toxic chemicals的用法和樣例：
例句
- In order to reduce the usage of virulent chemicals in the experimental process, the method to determine the proline content was improved.
摘要為了減少實(shí)驗過(guò)程中有毒性化學(xué)藥品的使用，對測定脯氨酸含量的方法進(jìn)行了改進(jìn)。 - Chemicals were found in the river.
在這條河里發(fā)現了危險的高濃度有毒化學(xué)物質(zhì)。 - There is also considerable contamination by PCBs, toxic chemicals with carcinogenic effects.
另有大量污染是由含有可致癌的有毒化學(xué)物質(zhì)的印刷電路板所致。
