You keep still because maybe his visual acuity is based on movement like T. Rex and he'll lose you if you don't move.
Và cháu sê đứng yên 1 chỗ. Vì cháu nghĩ nó chỉ thấy cháu khi có chuyển động như khủng long T-Rex, và nó sê không thấy cháu nếu cháu đứng yên.