shrewd
adjective approving uk/ʃruːd/ us/ʃruːd/
C2 明智的;精明的
having or based on a clear understanding and good judgment of a situation, resulting in an advantage
[ + to infinitive ] He was shrewd enough not to take the job when there was the possibility of getting a better one a few months later. 他很聪明没有接受那份工作，因为几个月后他有可能会得到更好的工作。
She is a shrewd politician who wants to avoid offending the electorate unnecessarily. 她是一个精明的政治家，想避免不必要地得罪选民。
It was a shrewd move to buy your house just before property prices started to rise. 在房地产价格开始上涨之前购买房子是个明智之举。