at a great depth meaning in English

在很深处

The gemstones in the corundum group consist of pure aluminium oxide which crystallised into wonderful gemstones a long time ago as a result of pressure and heat at a great depth
蓝宝石的矿物名称为刚玉，其纯铝氧化物，是在久远以前被地层底下的压力和热度结晶化，转换为美丽灿烂的宝石。纯刚玉是无色的。
This essay believes that , unlike those traditional realistic novels that are close to the material world , this novel , by the process of symbolization of life , reveals at a greater depth the poetic features of the postmodern commercial society represented by america , and embodies the unique spiritual world of postmodern life
本文认为，作品似乎不像传统的现实主义作品那样贴近物质世界，却在生活的符号化过程中，更深层次地揭示了当今以美国为代表的后现代商品社会的诗性特征，发掘出后现代生活独特的精神世界。