1. solve vt.解决; 解答; 解释
例句：Their domestic reforms did nothing to solve the problem of unemployment
他们的国内改革未能解决失业问题。

2. recognize vt.承认; 识别; 认出
例句：The receptionist recognized him at once
接待员一眼就认出他了。

3. opportunity n.机会; 适当的时机良机
例句：He is waiting for his opportunity.
他在等待机会。

4. discuss vt.商量; 讨论，谈论
例句：We’ll discuss these in detail below.
我们将在下面详细讨论。

5. authentic adj.真的，真正的; 可信的
例句：She has authentic charm whereas most people simply have nice manners
她散发出真正的魅力，而大多数人只是举止优雅。
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