第一句：Can you take a message for me?
能幫我留言嗎？

A: Good morning. ABC company.
早上好，ABC公司。
B: Hello. This is Dick Smith of DEF Company. May I speak to Mr. John Black, please?
你好，我是DEF公司的迪克·史密斯。我可以和約翰·布萊克先生通話嗎？
A: I'm sorry. Mr. Black, please?
對不起，布萊克先生剛出去。
B: Can you take a message for me?
能幫我留言嗎？

第二句：I think it's better for me to leave a message.
我覺得還是留下一個口信比較好。

A: Could you call back later or would you mind leaving a message?
您可以過一會兒再打來或者給他留言嗎？
B: I think it's better for me to leave a message. But it's more important and urgent. Please make sure he gets this message.
我覺得還是留下一個口信比較好。不過這件事很緊急，請一定將留言傳達給他。
A: I see. I'm sure to pass your message to Mr. Black.
明白了，我一定把您的留言傳達給布萊克先生。

其他表達法：

Would you mind telling him that due to some sudden changes, do not fill out any orders?
你可以告訴他，由于意外變化請勿發貨嗎？

Let me repeat the message.
我再重復一遍留言。