Many people believe that grammar is the sine qua non of language learning.
许

为学习语法在学习语言中是必不可少的。
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The 2019 competition's coming up next week in the U.S. state of Maryland and a group of linguists from Babel, a language learning tool teamed up with folks from the Merriam-Webster Dictionary to determine the hardest words from the past decade.
2019年度词汇大赛将于下周在美

兰州举行,来自 Babel 公司的一群语言学家将与《韦氏词典》的编辑们合作,选出过去十年中最难的词汇。
Now, if you're learning a language, learning jokes in that language is usually, like, one of the final barriers you have to punch through before you can claim to be, like, a full mastered speaker person thing in that language.
现在,如果你正在学习一种语言,那么用这种语言,来学习笑话,通常就是你必须冲破的最
一道障碍之一,在你成为,比如,可以自称语言大师之前。