The conditioned response, once it is firmly established, can be extinguished dozens of times, but it sill always return, like the proverbial bad penny.
条件反射一经形成，虽然可以一次又一次地压制下去，但是它总会重新再现，真是摆也摆不脱扔也扔不掉。
Cloud like clothes look, the spring breeze blows sill Revlon.
云想衣裳花想容，春风拂槛露华浓。
F draft sill is an integrated casting component with thin wall and inner empty box, and irregular deformations like torsion and bending occur easily.
牵引梁为薄壁、内空箱体整体铸造构件，铸件容易出现搓扭和弯曲无规律性变形。
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