眾所周知，直到上個世紀中葉日本是一個封建國家。

It is well known that up to the middle of the last century Japan was a feudal state.

Source: Tatoeba

Sentence Composition

1 眾所周知 zhòngsuǒzhōuzhī (idiom) as everyone knows
2 直到 zhídào until
3 上個 shàngge
  1. first (of two parts)
  2. last (week etc)
  3. previous
  4. the above
4 世紀 shìjì century

classifier: 個
5 中葉 zhōngyè
  1. mid- (e.g. mid-century)
  2. middle period
6 日本 Rìběn Japan
=7 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=7 是 shì variant of 是 shì
=8 一個 yīge
  1. a; an; one
  2. the whole (afternoon, summer vacation etc)
=8 一個 yīgè
  1. Combination of the numeral 一 (“one”) and the generic classifier 個／个: a; an; one
  2. same
9 封建 fēngjiàn
  1. system of enfeoffment
  2. feudalism
  3. feudal
  4. feudalistic
10 國家 guójiā country; nation; state

classifier: 個