According to the high protein of main food and fetch food by boring, we can presume the proteinase from Oesophagus gland of Neverita didyma has high activity and unusual physical–chemical characters.

而且对于软体动物蛋白酶提取纯化及纯化后蛋白酶的理化性质研究也很少，因此研究扁玉螺食道腺中的蛋白酶的纯化方法及其理化性质具有一定的理论意义和潜在应用价值。

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Contrast that with the extensive ruins of the city of Miletus, with remains of baths, temples and a theatre, some dating back to the 16th Century BC, and the giant columns at the sanctuary of Apollo at Didyma.

BBC: An epic ancient ruins road trip