Vector signal

vector ['vɛktɚ]

n. 矢量;航向;[生]带菌者;[天]矢径; vt. 用无线电引导;为…导航;

veh, vect, vex 表”运输,传达”

signal ['sɪgnl]

n. 信号，暗号;预兆，征象;动机;导火线; vt. 向…发信号;用动作（手势）示意;以信号告知; vi. 发信号; adj. 显著的，优越的;暗号的，作信号用的;

sign记号，信号+al表名词 → 信号

It hurts, doesn't it?

会痛 ，是不是？

Deliberate slowly,execute promptly.

慢慢酌量，快快行动。

when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv

计算机可以使办公室人员和会计免除那些枯燥、重复的劳动。