But if they are wrong, an already crowded city will simply gum up.

但如果他们错了的话，这个已经拥挤的城市肯定会更糟糕。

Antibodies are proteins that stick onto a pathogen and gum up its works.

从化学成分上来讲，抗体属于一种蛋白质，它通过与病毒结合以阻断病毒的感染能力。

The hitch is that syngas from waste is full of tarry residue that tends to gum up the turbine.

问题是垃圾里产生的裂解气夹带着焦油残渣会堵塞涡轮设备。

That would add to the legal cost of transactions and further gum up a damaged channel of credit.

这将会增加交易的法律成本，此外还会把本已损坏的信贷通道弄得更糟。

But too often, human frailties gum up the works by leaving unforeseen breaches in otherwise secure systems.

但情况经常是，人为过失在原本安全的系统中留下意外的漏洞，把事情弄糟。