The Context class is a context class, and Plus and Minus are implementations for calculation respectively. The code is as follows:
一个年轻女子在神秘的环境下不幸怀孕的黑暗旅程。
1601
单口喜剧演员、演员、编剧和播客“Congratulations”的主持人克里斯·德埃利亚回归，带来他最新的 Netflix 喜剧特辑《克里斯·德埃利亚：幸福童年》。尽管和其他喜剧演员相比，克里斯·德埃利亚是个异类，与支持他的父母一起过着常规的生活，但他仍会在公众场合对宝宝大吼、将不合适的照片空丢给飞机上毫无戒心的人、提醒别人海豚性侵案（请在谷歌搜索）的潜在威胁。《克里斯·德埃利亚：幸福童年》在明尼阿波利斯州州立剧院录制，于 2020 年 4 月 14 日在 Netflix 上面向全球首播。
人们继续干活，只是多了些闲谈的内容。
忙碌中，见众人推让，便上前道：外婆，两位舅奶奶，刘外婆，你们都别推了，再推来让去的，天都要亮了。
If the ammunition consumption and duration are taken as the criteria, The fighting at position 149 was not as intense as at the previous two positions, But the casualties were the greatest, Investigate its reason, It is precisely because the "living biological weapons" put into the battlefield by the Vietnamese army this time have "flying units", Not only that, It is also accompanied by another type of "living biological weapon" that can operate underground. A special "air-ground coordination" three-dimensional strike has been formed under one day and one place. This made our soldiers in position 142 overwhelmed at that time. During the interview, I had a lot of trouble to find a veteran of that year. His name was Zhang Xiaobo. When recalling the battle, I could see that he was still concerned about the battle, both in tone and manner.
时间在烽火战乱中过了二十多年，真心
于是。
1, Civil Aviation Pilots Recruitment Physical Conditions:
故事舞台设定在迎来创立122周年的私立百花王学园，这是一所财政界大人物子女就读，有传统有地位的名门学校，决定学生阶级高低的就是赌博技巧，获胜者得到地位与名誉，失败者会被剥夺财产和尊严，故事从神秘转校生蛇喰梦子（滨边美波 饰）的出现开始。梦子平时优雅文静，但一旦开始赌博的话，就会成为“狂赌魔女”。她用超乎常人的洞察力、记忆力和交涉力玩弄对手，即使冒极大风险也要一决胜负，最终把他们推下毁灭的深渊。
Finally, let's do some testing work:
"Great! Grandma, this Christmas tree is so beautiful!"
尉缭说道：通过此事也看得出，尹旭确实有些能耐和本事，否则也不会让范文轩这么看中。
青木也道：头一个就是黄豆，看着他别惹青莲。
该剧通过发生在日常生活中的案例，向人们讲述了十个耐人寻味、发人深思的故事。权与利的交锋、生与死的搏斗。
该剧讲述了学神女孩成茗和顶流明星佑之奇等人为实现音乐剧的梦想而奋斗的故事。
小赌不一定怡情、家庭和社会如何影响青少年嗜赌、纯粹金钱援助削弱戒赌决心、生活欠寄托易身陷赌海、理性赌徒不敌嗜赌的心、复赌问题等。
