... 跳级小区试验 promotion plot trial 学童过街标志 children crossing sign; school crossing sign 优秀学生学习跳级 academic acceleration ...
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school crossing sign
学校十字路口标志
以上为机器翻译结果,长、整句建议使用 人工翻译 。
He has a patent pending on a new school-crossing sign (it boasts lights and a buzzer).
他还有一项学校路口标识的专例(兼具交通灯和蜂鸣器)。
youdao
The girl in the school children crossing sign is based on a picture of herself.
BBC: The road sign as design classic
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