... a stand of colors的意思 a stamp mill什么意思及同义词 a stain on one's reputation是什么意思 ...
双语例句
1
The stampmill is closely related to the recovery of gold by amalgamation, a process now obsolete.
捣碎机与现在已经不使用的汞齐法选金密切相关。
2
When the size of operations increased in the middle ages, the stampmill was introduced in which numerous pestles were powered by a water wheel (Figure 8) or by horses.