He sent me the book, together with a letter.

他把书寄给我，还附上了一封信。

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Together with this letter is a map to our house.

除了这封信以外，还附上了一张到我们家的地图。

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I started to write a letter to them right away. After finishing it, I went to the post office and mailed the letter together with all my pocket money.

我立刻给他们写信，写完后，我去邮局，把信连同我所有的零花钱寄了出去。

youdao

"If the purpose is to increase security checkpoint flow, there are much more effective steps we can take together to streamline the security checkpoints with risk-based screening mechanisms, " he wrote in a letter to Pistole.

CNN: March 10, 2013 -- Updated 0334 GMT (1134 HKT)

In 2009, the Commonwealth Secretariat signed a Letter of Agreement with UNESCO in which the two organisations agreed to work together in reaching the six EFA goals.

UNESCO: Seminar on Education and Violent Conflict

The Israeli prime minister, Ehud Barak, sent a letter to the Chinese president and expressed his sorrow that Israel, who is right now together with the United States in the midst of an effort to achieve historic decisions who are related to her vital interests, will not be able, under the current circumstances, to continue in the implementation of the Phalcon project.

CENTERFORSECURITYPOLICY: Center for Security Policy | Black Box: Agreements Secretly Arrived at Camp David Will Disserve Peace, Undermine Democratic Processes in U.S., Israel