本文的思路比较微妙，如果您首先观察一位知识渊博的人用图形表示他在物理空间和时间内移动的轨迹，通常会更容易理解本文内容。
The idea of this article is subtler, and usually easier to grasp if you first watch a knowledgeable presenter illustrate points as he moves in physical space and time.
他首先对论坛的召开表示热烈祝贺，向与会的各界朋友表示诚挚问候。
He first extended his warm congratulations upon the opening of the Forum and cordial greetings to the participating friends from different communities.
马里内略表示，一名英国商人想从波兰收藏家处购买画作但首先想确定这幅画是否被盗而联系了他的团队。
Marinello says his organization was contacted by a British dealer who was apparently considering buying it from a Polish collector but first wanted to check if it was stolen.
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