汉译英：在交谈时，要注意措辞。

Be cautious about the diction when talking.
We should pay attention to what words have been used when talking.

在交谈时：while talking; when you converse
措辞:wording; diction

In the conversation,we must pay attention to the wording

1.when talking to someone, be aware of your way of expression.
2.be careful about your phraseology when speaking.

Pay attention to the (your)expressions during the covnersation.
请参考！！！