1.make contribution to 為…作貢獻
例句:What's more, improve our ability to make contribution to the human beings.
還有提升自己的能力來為人類做貢獻
。2.toxic chemical 有毒化學品
例句:They're promising to trace any other products that might have been tainted by the toxic chemical.
他們承諾查處任何可能受這種有毒化學品污染的其他產品
。3.associated with 與…有關系
例句:Cigarette smoking has been associated with lung cancer.
肺癌被認為與吸煙有關
。4.lead to 導致
例句:Heart failure led to her father's death.
心力衰竭導致她父親的死亡
。