The time you spend on an ad-hoc project tends to be fairly short.
你花在一个临时项目上的时间往往是相当短的。
The time you spend on an ad hoc project tends to be fairly short.
你花在一个特别项目上的时间往往是相当短的。
The biggest advantage to this approach is that it is still fairly easy to perform AD hoc reporting, given that all the data you need about a single class is stored in only one table.
这种方法最大的好处是，它仍然能相当容易地执行专门报告，只要您所需的有关单一类的所有数据都只存储在一张表中。
It intersperses an occasional AD between songs but the ads tend to be fairly localized and occasionally even useful.
在每首歌曲之间偶尔会有一些广告，不过广告是本地化的，有些还比较有用。
For comparison purposes, a banner AD on the Web getting a 2% click-though rate (CTR) is considered fairly successful, but most campaigns now receive just 0.2%-0.3% CTRs.
要知道，如果网页上的banner广告点击率达到2%的话就会被视为非常成功，但大部分点击率只有0.2 - 0.3%。
For comparison purposes, a banner AD on the Web getting a 2% click-though rate (CTR) is considered fairly successful, but most campaigns now receive just 0.2%-0.3% CTRs.
要知道，如果网页上的banner广告点击率达到2%的话就会被视为非常成功，但大部分点击率只有0.2 - 0.3%。
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