The machine is clicking away.
机声轧轧.
It involves staring straight ahead into a machine and clicking a button when you notice a blinking light in your peripheral vision.
实验包括直视实验屏,在视野外周出现闪光点是按下按钮。
A light, sharp, clicking sound made repeatedly by a machine, such as a clock.
'滴'.''嗒声钟表等机器反复发出的很轻且很''.'高'.''的''.'滴'. ''嗒声.
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