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春夏秋冬四季同时共存，那美丽的景色，令每一个见过的人，都难以忘怀。著名的马拉松战役中，希腊英雄特米斯托克列斯（沙利文·斯特普尔顿 Sullivan Stapleton 饰）射杀波斯国王大流士王，从此埋下薛西斯一世（罗德里格·桑托罗 Rodrigo Santoro 饰）卷土重来的祸根。在波斯王国海军统帅阿特米西亚（伊娃·格林 Eva Green 饰）的煽动下，薛西斯率领大军与斯巴达的领袖列奥尼达（杰拉德·巴特勒 Gerard Butler 饰）及其三百勇士在温泉关爆发流传千古的血战。另一边，阿特米西亚统帅的强大海上部队逼近爱琴海另一边的雅典。威望关头，特米斯托克列斯再度站出来，和希腊的勇士们为了捍卫自由迎战这个体内流淌着复仇之血的黑色女神。翻云吐雾，恶浪滔天，最残酷的杀戮在遥远的时代进行……The Source class is a decorated class, and the Decorator class is a decorated class. You can dynamically add some functions to the Source class. The code is as follows:13A low temperature stop valve, Unlike Example 1, Comprises a valve body 1 and a valve cover 2, A valve stem 3 is arrange in that valve body 1, One end of the valve stem 3 is provided with a valve disc 4, The other end of the valve stem 3 is provided with an adjusting handwheel 5, A low portion of that disc 4 is provided with a guide sleeve 6, The guide sleeve 6 is fixed by means of a connecting piece and a spring pad 8, Between that disc 4 and the guide sleeve 6 is provide a valve seat 7, Between that valve stem 3 and the valve cov 2 there is provided a packing assembly 9, An O-ring 10 is further dispose at that upper portion of the packing assembly 9, The upper part of the O-ring 10 is provided with a packing gland 11, the valve body 1 is provided with an arc-shaped end face 12, the arc-shaped end face 12 forms a line seal between the valve body 1 and the valve seat 7, the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41, the packing assembly 9 comprises a flexible graphite packing layer, the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity, and the two O-rings 10 are respectively arranged on the inner side and the outer side of the packing gland 11.