... 用作慈善事业的能解决问题的收入来源 a useful source of income for the charity 行业观察家 industry observer 观察员 an observer; artillery spotter; hair; inspector; o erver; oberver; observer ...
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field o erver 现场观察员
ideal o erver 幻想观察堵
lookout o erver 了望人员
weather o erver 气象观察员
primary o erver 主瞭望台
double o erver rangefinder 双观测者型测距仪
Fault Systems State O erver 故障系统状态观测器
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