1.The hole in your trousers is not noticeable.

1.你裤子上的洞不明。

2.Alkalescent granites and gold-related silication and argillation are geological prerequisites for the formation of noticeable gold deposits.

2.偏碱性花岗岩及与金的成矿动有关的硅化、粘土化蚀变是金矿田规模金矿床存在的地质前提。