日本的单词是:Japan;
Japan:n.日本。
例句:

(图片来自网络侵删)
Which part of Japan do you come from?
你是日本哪个地区的人?
相关介绍The band's very big in Japan.
这个乐队在日本很走红。
Japan is often quoted as the prime example of a modern industrial nation.
人们经常举例把日本作为现代工业国家的典范。
Representatives went to Japan to pitch the company's newest products.
销售代表前往日本推销本公司的最新产品。
In Japan you are taught great respect for your elders.
在日本,人们要学会非常尊敬长辈。
I have an open invitation to visit my friend in Japan.
我在日本的朋友邀请我随时去看他。