Although the sea around them was thought to be rich in oil and minerals, it was uneconomic to utilize them . 尽管人们认为它们周围的海域有丰富的石油和矿藏，但是开掘这些资源很不经济。
Group theory is particularly rich in problems of this type, especially because of the search for sporadic simple groups . 在这类问题中，特别是由于对散在的单群的研究，群论有特别丰富的内容。
The cold waters of the northern pacific and the still, shallow inlets are also rich in flounder, tuna, hablibut, shrimp and crab . 北太平洋的寒冷海水和宁静而浅的海湾，还盛产比目鱼、金枪鱼、庸鲽、虾和蟹。
No . i didn ' t come to become rich in this country 不,我不是想发财才来这个国家的
Peanuts , fish and pulses are rich in protein 花生米,鱼和豆子含有丰富的蛋白质。
I ' ll work like an ant to become rich in this world . . 我要像蝼蚁那样辛勤工作. .
I like to read books . this lake is rich in fish 我喜欢看书。这个湖有很多鱼。
We ' re rich in something , but it ain ' t money 我们在某些方面很富有，但不是金钱
Macdonald company is the richest in the whole world 麦当劳集团是全球快餐业巨头。
This layer is rich in dissolved nitrogen and nitrides 它能有效的分解氮和氮化物。
