He then combined these simpler isolated substances with other substances to create new products.
譯：然后,他將這些簡(jiǎn)單、分離出來(lái)的物質(zhì)與其他一些物質(zhì)結(jié)合來(lái)創(chuàng)造新的物質(zhì).
附：isolate vt.使孤立,隔離 adj.孤立的,單獨(dú)的 n.隔離種群
例句:
Scientists have isolated the virus causing the epidemic.
科學(xué)家們已分離出引起這種流行病的病毒.
substance n.物質(zhì)；實(shí)質(zhì)；大意,要旨；根據(jù)
The branch of chemistry that studies and finds ways to use raw materials from farm products to make industrial products is called chemurgy.
譯：化學(xué)上的一個(gè)以研究并利用從農(nóng)產(chǎn)品中獲取的原材料來(lái)制造工業(yè)產(chǎn)品的分支被稱為實(shí)用化學(xué).
附：branch n.樹枝；分部；分支；支流；分叉
raw material 原材料
chemurgy n.實(shí)用化學(xué)
All his life Carver battled against the disposal of waste materials,and warned of the growing need to develop substitutes(代用品) for the natural substances being used up by humans.
譯：Carver一生致力于與（不當(dāng)?shù)模┨幹脧U料的方法作斗爭(zhēng),并對(duì)越來(lái)越多的發(fā)展替代人類所使用的天然材料的替代物的做法發(fā)出警告.
附：battle against
與 ...戰(zhàn)斗
例句:
Man is fighting a battle against pollution.
人類正在與污染作斗爭(zhēng).