They suggest this indicates that dogs aren't sensing emotions from a single feature, but piecing together information from all facial features just as humans do.

他们表示，这一点表明狗不是从某个单一的特征来感知情绪，而是像人类一样，将所有面部特征信息整合到一起。

youdao

No, not two, not three, just a single feature.

是的，不是两个，也不是三个，只写一个。

youdao

After that, nobody can think of a single feature that they really need.

再往后，没有人能再想出一个真正需要的新功能了。

youdao

But I have never been able to remember a single feature."

VOA: special.2009.12.24

The most-important single feature of modern economies is growth.

FORBES: Mr. Market Will Get His Pound Of Flesh...And Then Some

Few senior officers had the capacity to give their troops a laugh, and the single feature that made tolerable my vision of D Day, if there was such a feature, was that Happy Halloran would be the one to lead me into the jaws of death.

NEWYORKER: Rat Beach

Sprint offers Truly UnlimitedSM 4G LTE data, text and calling to any mobile device with no metering, no throttling, and no overages, all while on the Sprint network, making it the ideal carrier for customers who want to use every single feature of their Galaxy S 4 every single day of the month without worry.

ENGADGET: Samsung Galaxy S 4 priced at $150 on Sprint and T-Mobile, hits both carriers in late April