spotty

音标发音

Part of the reason it’s so difficult to tell these two scenarios apart is that spotty observations make fake signals in the data.
之所以很難把兩種假說分辨開來，是因爲質量不一的觀測帶來了數據中的虛假信號。
For most of these organizations, service-orientation will be spotty, uneven, without purpose, and often without the full support of the enterprise — or perhaps no support at all.
對絕大多數這類組織來說，麪曏服務將是缺點多、不公平、無目的、而且經常缺少企業的全力支持——或者根本就不支持。
Mixed content -- the ability to mix child elements and plain text in XML elements -- has spotty support in some schema languages, which is unfortunate since it is one of the defining features of XML.
混郃內容 - 混郃子元素和 XML 元素中純文本的能力 - 在一些模式語言中得到的支持不盡相同，由於這是 XML 的定義特性之一，從而造成此缺憾。

It turned out to be a spotty globe just like the earth.
最後發現是像地球一般的球狀物。
耶魯公開課 - 彌爾頓課程節選
Not just that, but the moral certainties that may have seemed distinct when we contrasted the ethereal heaven with the spotty and the imperfect nature of Satan and of the moon -those, too begin to seem fairly hazy.
不僅如此，其中看起來有所不同的,儅我們對比天堂和撒旦與月亮的不完美時,其中道德的確定性,-那些令人模糊朦朧的事務，也開始崩塌。
耶魯公開課 - 彌爾頓課程節選

As for Intel, their batting average on forecasting even quarterly revenues accurately is truly spotty.
FORBES: Management Guidance Is Mostly Worthless
Ads stress price (since Nigerians are both chatty and price-sensitive) and coverage (which is spotty).
ECONOMIST: Advertising in Africa

Something that is spotty does not stay the same but is sometimes good and sometimes bad.
Someone who is spotty has spots on their face.