обр. старые привычки берут верх; вновь приняться за старое

опять приняться за старое

旧日的习气或老毛病重新出现。

to revert to old ways

return to one's old habits; resume one's former manner; revert to one's old way of life; play one's old tricks again; relapse into error; go (slip) back to (into) one's old way of doing things; return (resume) to one's old manners; return to one's old vices; be up to one's old trick(s) again; go back to a bad (reprehensible) way of behaving; lapse into one's former habits (ways); return to life; Old habits come back again.

old habits come back; return to one's old habit

slip back into one's old ways; old habits come back again

slip back into one's old ways