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1·Casual observation, like your feelings.

不经意的观察，喜欢你的感觉。

2·Existing research - and casual observation - suggests it takes time to find a fitting job match at a good employer, especially when the labor market is slow to recover.

目前研究——和偶然观察——表明要找到合心意的工作和老板是费时的，尤其是劳动力市场恢复迟缓的时候。

3·More than through his words, I've learned from observation; from the locations of his ads, the frequency of his posts, and a thousand other details the casual reader would never notice.

除了他的文章外，我通过观察，通过他的广告位置，通过他的作品更新的频率，以及通过一千个读者从未注意过的其他细节来学习。

4·Last week's Casual Fridays study was inspired by my (incorrect) observation that the latest beta version of Firefox always displays tabs.

上周我突然发现火狐试用版总是显示标签，这给我的周五随意研究带来了灵感。