お大事に[odaijini] take care of yourself
暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
伊勢大神宮[isedaijinguu] the Grand Shrines of Ise
伊勢大廟[isetaibyou] the Grand Shrines of Ise
偉大[idai] greatness

医科大学[ikadaigaku] medical school
医大[idai] medical university
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一大[ichidai] one large ...
一大事[ichidaiji] serious affair

機関[karakuri] mechanism
に関して[nikanshite] related to
に関する[nikansuru] related to
シグモイド関数[shigumoidokansuu] sigmoid function
スカッシング関数[sukasshingukansuu] squashing function

ステップ関数[suteppukansuu] step function
ブーリアン関数[buuriankansuu] Boolean function
意志決定機関[ishiketteikikan] decision-making body
医療機関[iryoukikan] medical institution
因果関係[ingakankei] consequence

し難い[shinikui] hard to do
一難[ichinan] one difficulty
火難[kanan] fire calamity
海難[kainan] shipwreck
患難[kannan] affliction

危難[kinan] peril
及び難い[oyobigatai] hard to attain to
救難[kyuunan] rescue
救難ヘリコプター[kyuunanherikoputaa] rescue helicopter
苦難[kunan] suffering