In technical terms marker training is operant conditioning. Operant conditioning has been around for years. It is how Dolphins are trained at sea world.
响片训练用专业术语说是“增强训练法”。增强训练法已经被使用多年。在海洋馆里海豚就是使用这种方法训练的。
The river-sea dividing marker must be a symbol which separates the Yalu river from the Yellow sea.
江海分界碑，这里就是鸭绿江和黄海分界的标志吧。
Based on a quantitative poly-phylum marker species analysis, 9 FAD and LADevents were found in Cores 17957 and 17959 from the South China Sea.
根据南沙深水区17957和17959两柱状样多门类的生物事件研究，发现9个生物事件。
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