Dates, fractions, semicolons - these are the things that count. And these are the things that are most difficult to track down when your mind is all ablaze.

日期、分数、分号—这些才是要紧的，而头脑发烧时这些东西是最难盯住的。

youdao

Add to this the fact that these SQL statements are dynamic, and it becomes even more difficult to track down the originating code that produced the SQL.

除此之外，这些sql语句还是动态的，很难找到生成sql的代码。

youdao

This can result in undefined and unexpected behavior, which can be difficult and time-consuming to track down.

这可能导致不明确、不可预见的后果，要跟踪这种情况也是很困难很耗时间的。

youdao

But as the current effort shows, bin Laden is very difficult to track down, even under circumstances where we have substantial military assets deployed.

CNN: James Steinberg: Afghanistan war strategy

"Bot-herders and other 'spam kings' are difficult to track down, especially in so many different jurisdictions and areas around world, with no enforced policies against them, " Manky observes.

CNN: Fighting the agents of organized cybercrime

Law enforcement agencies had also complained that some of the devices used duplicated IMEI (International Mobile Equipment Identifier) codes, making it difficult to track down users suspected of using their handsets to plan crimes.

BBC: Kenya to switch off 'fake' mobile phones