to visit someone casually and without an appointment
навестить кого-то случайно и без предварительной записи (navestit' kogo-to sluchayno i bez predvaritel'noy zapisi)
"We decided to drop in on our cousins while passing through their town."
"Мы решили дроп ин он наших кузенов, проезжая через их город." (my reshilí **drop in on** nashikh kuzénov, proyezzhaya cherez ikh gorod)
to appear in a particular way or form
to reduce or reverse a policy or program
to start to happen in a satisfactory way
to separate or isolate from something
to have influence or importance
to use money that you had saved