我直到今天仍然不明白他当时为什么那样做。

To this day, I still don't understand why he did it.

《牛津词典》

到了19世纪90年代，自发的微笑相对容易捕捉，所以我们必须从别处寻找解释，为什么维多利亚时代的人仍然对微笑犹豫不决。

Spontaneous smiles were relatively easy to capture by the 1890s, so we must look elsewhere for an explanation of why Victorians still hesitated to smile.

youdao

它仍然需要放入一个容器中。这就是为什么更小、更软的容器突然流行起来的部分原因——它们可以被放进背包里。

It still has to go into a container. That is, in part, why smaller and softer containers have taken off.

youdao

Yeah, so you're asking, if for example, why do you need a booster of tetanus, because if I get exposed to tetanus wouldn't I have this rapid response?

所以你会问,举个例子来说,已经感染过破伤风杆菌的人,为什么仍然需要接种破伤风疫苗,身体不是应该马上对该病菌做出应答吗

耶鲁公开课 - 生物医学工程探索课程节选