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9.siege:(动)围攻 the act of surrounding a fortified place by an army trying to capture it; besiegement
The country was in a state of siege, and tanks were lined up in front of the President palace.
那国家正被围攻着,而战车都排在总统府前面。
10.strive:(动)努力 work hard; make a great effort; endeavor
We should strive for the truth.
我们该为真理奋斗。
11.vocation: (名)职业a profession for which one is best suited by talent and interest; profession
Teaching children ought to be a vocation as well as a way of earning money.
教育儿童是一种职业,也是一种赚钱的方式。