慢速英语:Improve Your Pronunciation By Taking Selfie Videos

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1. believe vt.相信; 信任; 以为
例句：Experts believe that the coming drought will be extensive
专家们认为即将发生的旱灾将侵袭大片地区。

2. appear vi.发表; 出现，显现
例句：They appear to be very sensitive to mildly corrosive environments.
它们似乎对轻度的腐蚀环境非常敏感。

3. improve vt.提高（土地、地产）的价值; 利用（机会）; 改善
例句：Both the texture and condition of your hair should improve
你头发的发质与健康状况都应改善。

4. explain vt.讲解，解释
例句：He made up a story to explain why he was absent.
他编造了一个故事为他的缺席辩解。