(idiomatic) bright, intelligent, sharp

it is better to; it is preferable to

後背位: doggy style

言いつけ, 言い付け, 言付け: orders, instructions, command

許嫁, 許婚, 言名付: (historical) an arranged engagement, wherein both sets of parents promise that their children shall wed, generally arranged while the children are still young; (rare) a fiancée (female) or fiancé (male)

委員長: committee chairman / 医院長: head doctor

誠心誠意: in all sincerity; with one's whole heart

性交体位: sex position

太陰暦: a lunar calendar

to refer to, to mention