对啊。一刮风,就有很多尘土和沙子,太脏了。
But I am treated like a mineral, a bit of sand blowing about with no sense of you and no knowledge of myself.但我的待遇像矿物,在风中飘荡的一粒沙子,既没感觉到祢也没觉察到我自己。
Therefor, it is greatly significant to clarify the mechanism of sand blowing process so as to control the production of sand core.由于砂芯通常采用射芯的方法来制造,因此,了解射砂过程的机理,并且在此基础上对射砂过程加以控制,就显得至关重要。