その講堂はひどく黒ずんでいる。その原因の一つは酸性雨である。

Sentence Analyzer

English Translation

The auditorium is terribly stained. It is, in part, due to acid rain.

Furigana

その講堂(こうどう)はひどく黒(くろ)ずんでいる。その原因(げんいん)の一(ひと)つは酸性雨(さんせいう)である。

Romanji

Sono kōdō wa hidoku kurozundeiru. sono gen'in no hitotsu wa sanseiu de aru.

Words

其の (その)

that (something or someone distant from the speaker, close to the listener; actions of the listener, or ideas expressed or understood by the listener); the; um...; er...; uh...

講堂 (こうどう)

auditorium; lecture hall

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

酷い (ひどい)

cruel; heartless; hard; harsh; severe; violent; intense; strong; heavy; extreme; very bad; terrible; awful; excessive; exorbitant; unreasonable; outrageous; unfair; unjust

黒ずむ (くろずむ)

to blacken; to darken

原因 (げんいん)

cause; origin; source

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

一つ (ひとつ)

one; for one thing; only; (not) even; just (e.g. "just try it")

酸性雨 (さんせいう)

acid rain

だ (だ)

be; is; indicates past or completed action; indicates light imperative

或 (ある)

a certain ...; some ...