为正常播放该音频，请使用IE9及以上版本IE浏览器或其它浏览器。 你问我答 近义词辨析：strong、vigorous、tough、robust 内容简介 一位听众来信说自己很难区分 “vigorous、tough、robust” 和 “strong” 的用法，因为它们的意思与 “strong” 有重叠。

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The shared vision of Egyptian President Abdel-Fattah al-Sisi and Chinese President Xi Jinping was crucial in establishing the comprehensive strategic partnership, officially announced in December 2014 ...