be ignorant of v. 不知道，不了解；
例句：
Firms may be ignorant of the markets they are entering.
企业可能并不了解他们正在进入的市场。
相关介绍
We might be ignorant of possibilities and alternatives.
我们或许没有意识到种种可能和选择。
That doesn't mean the market has any right to be ignorant of events that are barreling down the pike toward it.
那并不意味着市场有权对纷至沓来的重大事件一无所知。
This story tells us that people should not be ignorant of one's strength or doing something beyond one's ability.
这个故事告诉我们，人们不应该无视自己的能力，或者做超出自己能力的事情。
No one should be ignorant of law.
任何人都不应对法一无所知。
