Even the requirement that biomaterials processed from these materials be nontoxic to host tissue can be met by techniques derived from studying the reactions of tissue cultures to biomaterials or from short-term implants.
解释:宾语从句中的主语和谓语被长插入语分开,造成阅读障碍。插入语中有一个固定搭配understanding of A as B,是把 A 理解成 B 的意思。不过本句中 as 的宾语不容易理解: shaping influences on people’s lives 可以理解成"形成了对人们生活的影响"也可以理解成"对人们生活的塑造性(决定性)影响"。当然后面的理解是正确的,然而在阅读现场想要在瞬间做出正确判断,还有赖于考生的阅读理解力和词汇功底的深浅。插入语后面还有一个固定搭配: A owes much to B,指前者有很多东西是来自于后者,得益于后者的。