granite bed的用法和樣例：
例句
- Wenquan molybdenum deposit is a porphyry type mineral deposit related with Indosinian granite.
溫泉鉬礦是與印支期花崗巖有關(guān)的斑巖型鉬礦床。 - Instead, the Yangtze hits a large bedrock of solid granite at Shi Gu and changes course completely, heading east across the entire country.
長(cháng)江在石鼓遇見(jiàn)了一個(gè)巨大堅實(shí)的花崗巖巖床，完全改變了他的方向，向東貫穿了整個(gè)中國。
