And, just to show some of the hidden balance here, 1 here we have one mole. I don't put a one in front.

这儿有一些隐藏的平衡，比如说这个1摩尔，我并没有在前面写了一个。

麻省理工公开课 - 固态化学导论课程节选

It's not as popular as Central Park. But I feel like it's kind of a hidden gem.

它并没有中央公园有名。但我觉得它是一枚被隐藏的瑰宝。

纽约的公园 - SpeakingMax英语口语达人