1 N-UNCOUNT 金粉；金末；砂金 Gold dust is gold in the form of a fine powder. 金粉；金末；砂金

2 N-UNCOUNT 稀罕之物；难得之物 If you say that a type of thing is like gold dust or is gold dust, you mean that it is very difficult to obtain, usually because everyone wants it. 稀罕之物；难得之物 [British]