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1、prohibitory sign───禁止标志
2、positive sign───n.（数）正号，加号（同plussign）；n.正号
3、sign───n.迹象；符号；记号；手势；指示牌；vi.签署；签名；vt.签署；示意
4、the sign───标志
5、back back───后退
6、degree sign───学位标志
7、zodiac sign───星座；生肖；黄道十二宫
8、exit sign───[安全]出口标志
9、pisces sign───双鱼座
1、The Rockets are very good! But my question is why do u sign back Steve Francis and then not play him in the first games of the season?───火箭很强大！但我的问题是为什么你签回了斯蒂夫·弗朗西斯却不在赛季初的比赛中让他上场？
2、The director reportedly agreed to sign back on for the new films after Fox agreed to make a big donation to his environmental fund.───据报道，在福克斯公司同意向后者的环保基金提供大笔捐款后，卡梅隆最终同意为两部新片Cao刀。
3、The entertainers plan to sign off of social media platforms like Facebook and Twitter on World AIDS Day and only sign back on when the charity raises $1 million.───众多明星打算在AiZi病日停止使用Facebook和Twitter之类的社会化媒体平台，直到该机构筹集到一百万美元资金再重新登录。
4、Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area.───早在20世纪初，一些停车标志是黄色的，因为在光线不好的地方很难看到红色标志。
5、be patient — it could take weeks or even months for younger babies to sign back.───要有耐心，因为可能在好几个星期甚至好几个月以后，你的小宝宝才会有回应。
6、Tong Cheng, Shenzhen, Guangdong Pearl River Delta Express Courier Service (free to sign back to a single).───深圳同城、广东珠三角特快速递（免费签回单）。
7、You ran a stop sign back there and I'm going to have to give you a citation.───你闯了后面那个停车标志，所以我得给你一张传票。
8、Didn't you see that stop sign back there?───你没看见后边的那个停车标志吗？
9、Suppliers must request the trucker to sign back the Cargo Release Authorisation Letter for acknowledge receipt of the actual cargo.───货交运输商点收后，供应商需运输商签回发货授权书和写明实收数量
1、BB shall sign back AA's orders if BB accepts.