| 单词 | trace amount |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔Agent Orange〕A herbicide containing trace amounts of the toxic contaminant dioxin that was used in the Vietnam War to defoliate areas of forest.落叶剂，橙剂：一种含有微量毒药戴奥辛的除草剂，在越南战争中被用来使森林地区的树木落叶美国传统〔primer〕The weapons still contain trace amounts of primers or detonation devices.这些武器仍带有少量底火或引爆装置。外研社新世纪〔trace〕Trace amounts of the pesticide were found in many foods.许多食物中都发现了少量农药残留。韦氏高阶 |
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