1·In many cases, changing the method signature so the collaborator becomes a parameter will result in a confusing, untested snarl of code inside the method's original callers.
在许多情况下，更改方法签名以使合作者成为参数将会在方法的原始调用者内部产生混淆的、未经试验的代码混乱。
2·Genetically engineered foods contain untested novel foreign compounds that can be detrimental to our health, just as they are to the environment and farmers' livelihoods.
转基因食品含有未经试验的外来成分，对我们的健康可能有害，如同它们已经危害环境与农民生计那样。