Christo explains that he's doing some sluicing with his sluice box.
克里斯托解释说，他正在用他的泄水箱进行泄水。
Sluice box
原声例句
2014 English Cafe
2014 English Cafe
What you want to do when you sluice the sluice box is get rid of the small rocks in order to find the actual gold.
当您打开闸箱时，您要做的就是清除小石块以找到真正的金子。
2014 English Cafe
According to Christo, the eddies that form near the rock will help collect rocks and possibly gold that he can then use his sluice box to find.
根据 Christo 的说法，岩石附近形成的漩涡将有助于收集岩石和可能的黄金， 然后他可以使用他的水闸箱找到这些黄金。
2014 English Cafe
It does mean taking water to rinse something or wash something off, but it's used in a very particular way in connection with a noun called a " sluice" or a " sluice box." A " sluice box" is a tool that people use to find gold.
它确实意味着用水冲洗某物或洗掉某物，但它以一种非常特殊的方式与一个叫做“sluice” 或“sluice box” 的名词一起使用。 “sluice box” 是人们用来清洗的工具找到黄金。
英语百科
Placer mining
Placer mining (/ˈplæsər/ or /ˈpleɪsər/) is the mining of stream bed (alluvial) deposits for minerals. This may be done by open-pit (also called open-cast mining) or by various surface excavating equipment or tunneling equipment.
Placer mining is frequently used for precious metal deposits (particularly gold) and gemstones, both of which are often found in alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits. The metal or gemstones, having been moved by stream flow from an original source such as a vein, are typically only a minuscule portion of the total deposit. Since gems and heavy metals like gold are considerably more dense than sand, they tend to accumulate at the base of placer deposits.
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