驻扎在一个以一辆小型面包车为标志的临时检查站的安全部队挥手示意我们通过。
Security forces at a impromptu checkpoint marked by a small minibus wave us by.
左边，以红色气体和尘埃云为标志的，是不规则星系m 82。
On the left, marked by red gas and dust clouds, is irregular galaxy M82.
本周达成的协议转向以现货价为基础的季度合约，这标志着已持续40年的年度基准合 约体系寿终正寝。
The agreement this week to move to quarterly contracts based on spot prices marks the end of the annual benchmark system that has lasted 40 years.
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