Reaching the designated area around midnight, the aircraft received the proper recognitionsignal from the ground.[7]
飞机在午夜前后到达指定区域，看到地面上出现了正确的识别信号。
2
How proteins are targeted and translocated mediated by signalrecognition particle (SRP) in eukaryotic cell is very clear and uniform.
信号识别颗粒（SRP）在真核细胞中如何定向和转运蛋白质是非常清楚和统一的。
3
A video camera connected to facial recognition software gave the robot feedback: When it made a movement that resembled a "real" expression, it received a reward signal.