noun
security
/si'kjuriti/
security 是什么意思
安全，安全性，防护物，保安
The state of being free from danger or injury defense against financial failure; financial independence freedom from anxiety or fear a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends.
词性
noun
难度
进阶
页面用途
检索复习