你问的词汇是什么？我可以告诉你如何用英文表示掌握词汇、了解词汇的来源以及提供一些英文例句和中文翻译。

To "master" a vocabulary means to have a thorough understanding of it and to be able to use it proficiently. Here are some examples of how you can use this verb in a sentence:

Example 1:

I've been studying Engpsh for years, and I feel pke I've finally mastered the vocabulary.

Example 2:

My goal is to master as much technical vocabulary as possible in order to excel in my field.

Example 3:

Learning a new language requires a lot of time and effort, but once you master the vocabulary, you'll be able to communicate with people from all over the world.

To "understand" the origin of a vocabulary means to have a knowledge of where it came from and how it developed. Here are some examples of how you can use this verb in a sentence:

Example 1:

I'm trying to understand the origin of this word, but I'm having trouble finding repable sources.

Example 2:

It's important to understand the origin of words in order to better understand the language and culture they come from.

Example 3:

I'm fascinated by the origin of words and how they've changed over time.

英文例句的中文翻译：

Example 1:

我学习英语已经很多年了，我感觉我终于掌握了词汇。

Example 2:

我的目标是尽可能掌握技术词汇，以便在我的领域中表现出色。

Example 3:

学习一种新的语言需要很多时间和精力，但是一旦你掌握了词汇，你就可以与来自世界各地的人交流。

Example 1:

我正在尝试了解这个单词的起源，但是我很难找到可靠的资料。

Example 2:

了解单词的起源对了解它们来自的语言和文化很重要。

Example 3:

我对单词的起源以及