左边是他儿子的脑扫描,是正常类型的。
我知道你在想什么:“嗯,没错,但不是正常类型的社区。”
I know what you're thinking: "Well, yeah, but not the right kind of community."
在正常情况下,由粘土组成的岩石产生的摩擦要比其他类型的岩石小得多。
Under normal conditions, rocks composed of clay produce far less friction than do other rock types.
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