大都市: a metropolis, a large city

お大事に: get well soon, take care of yourself

懈怠: spiritual sloth; laziness

The hiragana syllable ろ (ro). Its equivalent in katakana is ロ (ro). It is the forty-third syllable in the gojūon order; its position is ら行お段 (ra-gyō o-dan, “row ra, section o”).

炉: furnace, kiln

(endearing) denotes endearment

論: theory, argument, view

論理: logic

ロシア, 露西亜, 魯西亜: Russia (country)

理路: reasoning, line of thinking