Rewrite the following sentences using the words and phrases in brackets.

使用括号中的单词和短语重写以下句子。

Semantics helps in understanding the meaning behind words and phrases.

语义学有助于理解单词和短语背后的含义。

It is believed that dog-related words and phrases usually have good humour.

人们认为与狗有关的单词和短语通常很幽默。

Teenagers often use new slang—informal words and phrases—to talk to their friends.

青少年经常使用新的俚语——非正式的词和短语——与他们的朋友交谈。

Teenagers often use new slang-informal words and phrases-to talk to their friends.

青少年经常使用新的俚语——非正式的单词和短语——和他们的朋友交谈。

Remove extra words and phrases.

删除多余的单词和短语。

Learn the words and phrases listed above.

学习上列单词和短语。

To grasp some useful words and phrases.

掌握一些单词和短语。

Keep practicing simple words and phrases.

不断练习简单的词语和短语。

Banned words and phrases are not specified.

不会制定禁止出现的句子和单词。