trick of the trade

Noun

 * 1)  A shortcut or other quick, or very effective way of doing things, that professional workers learn from experience.

Translations

 * Dutch: kneepjes van het vak, klappen van de zweep
 * Finnish: ammattiniksi, ammattikikka
 * French:
 * Italian: trucchi del mestiere
 * Japanese: 職歴によって学んだ秘訣
 * Polish: