Make sure to check with the documentation for your framework to be sure; if you're still unsure, do the validation to err on the safe side.
确保查阅文档以保证框架的安全性；如果仍然不确定，请进行验证以确保稳妥。
So that they err they haven't done the background checking on the organisation they want to work with so they haven't bothered to check the website of the company or read some additional material.
所以他们会支吾，因为没有想要加入的组织做足背景调查或进行相关材料阅读。
Pit Bull in a Lion Costume: Check out that mane! I believe this guy (err…girl) could be King of the Dog Park with this fantastic headdress.
扮成狮子的比特犬：仔细看看那些鬃毛！我相信这伙计（呃，小姐）单凭这个了不起的头饰便可以在《爱情狗奇缘》中称王称霸。
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