Other labs have experimented with similar nanopore-based approaches to sequencing but have found it difficult to control how quickly the DNA strand feeds through the nanoscale hole.
其他实验室已经试验过类似的纳米孔测序方法，但研究人员发现，很难控制DNA链穿过纳米孔的速度。
2
Security experts say Stuxnet attacked the software in specialized industrial control equipment made by Siemens by exploiting a previously unknown hole in the Windows operating system.
安全专家称，该病毒通过利用Windows操作系统以前的未知漏洞专门袭击西门子控制设备。
3
That earlier loss of fiscal control wrecked the Conservatives' low-tax reputation as they had to push up taxes in order to plug the hole.