图卡诺语的动词后缀要求说话人说明自己是怎么知道某事的。
Tuyuca requires verb-endings on statements to show how the speaker knows something.
大多数语言不是具有大量的前缀和后缀(如西班牙语)就是有如汉语的音调，这些均会使学习者望而却步。
Most languages challenge the learner with either tables of prefixes and suffixes (like Spanish) or tones like Chinese.
懂得希腊语的人会一眼发现，scope这个后缀就是希腊语中观察或者查看的意思。
But people who know Greek will instantly recognize the word's suffix-scope-as coming from the Greek word for observe or watch.
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