宜(よろ)しくwell, properly, suitably, best regards, please remember me, please treat me favorably (favourably), please take care of, just like ..., as though one were ..., by all means, of course

選手(せんしゅ)がコーチに：「よろしくご指導(しどう)下(くだ)さい。」

Athlete to the coach: 'Please treat me well.' {well, properly, suitably, best regards, please remember me, please treat me favorably (favourably), please take care of, just like ..., as though one were ..., by all means, of course}

ママ友(とも)：「旦那(だんな)さんにも宜(よろ)しくお伝(つた)え下(くだ)さい。」

Mom Friend: 'Please give my regards to your husband as well.' {well, properly, suitably, best regards, please remember me, please treat me favorably (favourably), please take care of, just like ..., as though one were ..., by all means, of course}

あの両思(りょうおも)いの二人(ふたり)は、今頃(いまごろ)デートでよろしくやっているだろう。

Those two who are in love with each other are probably having a good time on their date right now. {well, properly, suitably, best regards, please remember me, please treat me favorably (favourably), please take care of, just like ..., as though one were ..., by all means, of course}

異性(いせい)と二人(ふたり)で宜(よろ)しくやるのは、私(わたし)たちの息子(むすこ)には少(すこ)し早(はや)いと思(おも)います。

I think it's a bit early for our son to be getting along well alone with the opposite sex. {well, properly, suitably, best regards, please remember me, please treat me favorably (favourably), please take care of, just like ..., as though one were ..., by all means, of course}

先生(せんせい)は私(わたし)に「親御(おやご)さんによろしく」などと言(い)う事(こと)なく、私(わたし)の前(まえ)から姿(すがた)を消(け)しました。

The teacher disappeared from my sight without saying things like 'Give my regards to your parents' to me. {well, properly, suitably, best regards, please remember me, please treat me favorably (favourably), please take care of, just like ..., as though one were ..., by all means, of course}