More N1 vocabulary

• ご苦労様ごくろうさまThank you very much for your....
• 議題ぎだいtopic of discussion; agenda
• 保温ほおんretaining warmth; keeping heat in; heat insulation
• 一敗いっぱいone defeat
• 破壊はかいdestruction
• 酸化さんかoxidation