慢速英语:Adele US Concert Tickets Sell in Minutes

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1. opportunity n.机会; 适当的时机良机; 有利的环境
例句：He is waiting for his opportunity.
他在等待机会。

2. purchase vt.购买; 采购; 换得
例句：Airline personnel can purchase flight tickets at reduced prices.
航空公司的职员可以优惠价购买飞机票。

3. post vt.张贴; 邮寄; 宣布
例句：I'll certainly remember to post the letter for you.
我当然记得要想着替你发信。

4. range vi.搜索; 变化; 延伸
例句：These particles may range in size from 0.01 to 10μ.
颗粒的大小可能在0．01-10μ范围内。