求翻译：掌握大量的词汇对于达到一门外语的流利程度是至关重要的。一个非官方的但却是经常被引用的有关剑桥初级证书英语考试的数字表明，词汇量少于三千五百词的学生大不可能在这项考试中成功。是什么意思？

For a lot of vocabulary to master a foreign language fluency is essential. An unofficial but it is often cited for the Cambridge Junior Certificate English exam figures show that less than three thousand five hundred word vocabulary of their students can not be successful in this examination.

Has a large vocabulary for a foreign language fluency is essential. An unofficial, but it is often quoted in the Cambridge first certificate in English examination figures indicate that less than 3500 words, vocabulary of the students is not likely to succeed in this examination.

Grasps the massive glossaries regarding to achieve a foreign language the fluent degree is very important.But one unofficial is actually is quoted frequently concerns the Cambridge primary certificate English test numeral to indicate that, the vocabulary is short not not impossibly in 3500 word stud

Have a large vocabulary is crucial to achieve a foreign language fluency. An unofficial but it is often referenced the relevant figures of the Cambridge Junior Certificate English examination, less than 3,500-word vocabulary students can't be successful in this examination.

Have a large vocabulary is crucial to achieve a foreign language fluency. An unofficial but it is often referenced the relevant figures of the Cambridge Junior Certificate English examination, less than 3,500-word vocabulary students can't be successful in this examination.