Examples of a high frequency word are 'it', 'the' and 'and'.

高频词的例子有“it”，“the”和“and”。

Professor Webb spoke there about research that showed students knew lower frequency words but weren't learning enough high frequency words.

韦伯教授刚才说了关于表明学生知道低频词却没有学习足够的高频词的研究。

We told to practice vocabulary high frequency words and stuff.

我们告诉我们要练习词汇高频词和其他东西。