There are at least two classes of these receptors, which have been designated A1 and A2.

这些受体至少有两类，分别被命名为 A1 和 A2。

youdao

Mass market paperbacks, which have been declining for years anyway, will probably disappear, as will hardbacks for mysteries, thrillers, "romance fiction," etc.

无论如何，大众市场的平装书已经衰落多年，且可能会消失，就像神秘小说、惊悚小说、“浪漫小说”等的精装书一样。

youdao

In front of the two trees which have been destroyed in the typhoon sit a group of young kids.

被台风摧毁的两棵树前面，坐着一群小孩。

youdao

The one item that comes to my mind right now is electrodes for electrocardiograms, which have been blocked.

VOA: standard.2010.06.17

He could take our molecules which have been scattered, put them back together, " and say "Ha, that's your body."

他可以收起,我们散落的分子，将它们重组，然后说“看，那是你的肉体“

耶鲁公开课 - 死亡课程节选

Please accept my present, which has been brought to you, for God has favored me, and I have plenty.

求你收下我带来给你的礼物，因为神恩待我，使我充足。

耶鲁公开课 - 旧约导论课程节选

Some say gold-related shares, which have been unloved for so long, now look attractive.

WSJ: Rising Stock Prices Flash a Warning��Selloff Ahead?

There are, in fact, a number of ways--some of which have been around for decades.

FORBES: Magazine Article

Another nerve-wracking way to play Asia is through the currencies, which have been in freefall, too.

FORBES: Here come the bottom-fishers