有年秋天的一个夜晚,古希腊哲学家泰勒斯在草地上观察星星,他一边慢慢地往前走,一边仰望星空,不料前面有个积满水的深坑,他没有注意,落入坑内,水淹到了胸部。坑很深,离地面足有两、三米,他无法爬出来,只得高呼“救命。” One night in the autumn, the ancient Greek philosopher Thales observed the stars on the grass. While walking slowly to the sky, he noticed that there was a water-filled pit in front of him and he did not notice and fell into the pit Water flooded the chest. Deep pit, full two or three meters from the ground, he could not climb out, had to shout “help.”