这个长度，不仅结构合理，而且也是日本当地木材生产的标准尺寸。

The length, "ichi-ken" is not only structurally sound, but is also the standard length of timbers produced in Japan.

youdao

这个长度，不仅结构合理，而且也是日本当地木材生产的标准尺寸。

The length, "ichi-ken" is not only structurally sound, but is also the standard length of timbers produced in Japan.

youdao