Translation of "japanese" into Chinese

He has only a superficial knowledge of Japanese.

他對日文只是略懂皮毛。

Japanese swords are sharp on all sides.

倭刀 是 切面 全部 开刃

I don't know how to say this in Japanese.

我不知道这个用日语该怎么说。

This book is intended for students who do not speak Japanese as a native language.

這本書是打算給不以日語為母語的學生所使用的。

The Japanese at large consider themselves better off than they used to be.

日本人一般都覺得自己的生活比以前過得好。