pre.cau.tion

precaution的音标和读音：
DJ音标发音： [priˈkɔ:ʃən]
KK音标发音： [prɪˈkɔʃən]

precaution的词性：
n.（名词）

1. An action taken in advance to protect against possible danger or failure; a safeguard:
预防，防备：预先采取动作以预防可能的危险或失败；保护：

He took every precaution but still got a bad deal on that used car.
他处处小心但还是在旧车交易中受骗

2. Caution practiced in advance; forethought or circumspection:
预先作出的警告；深思熟虑或周密慎重：

Precaution was impossible in those dire circumstances.
在紧迫的环境下无暇再去周密慎重

precaution的词源：

3. Late Latin praecauti? praecauti?n-
后期拉丁语 praecauti? praecauti?n-

4. from praecautus
源自 praecautus

5. past participle of Latin praecav?re [to guard against]
拉丁语 praecav?re的过去分词 [保护]

6. prae- [pre-]
prae- [前缀]

7. cav?re [to beware]
cav?re [意识到]