We have never observed him do otherwise.

我们从未看到他不是这样做的。

youdao

We observed that it was important for centenarians to have a strong social circle.

我们发现建立牢固的社交圈对百岁老人是非常重要的。

youdao

We observed that it was important for centenarians to have a strong social circle.

我们发现建立牢固的社交圈对百岁老人是非常重要的。

youdao