Complex sentence: Article 81 makes it possible to enact a law without approval of the Bundestag: if the Bundestag rejects a motion of confidence, but a new chancellor is not elected nor is the Bundestag dissolved, the Chancellor can declare a draft law to be "urgent".
Split into simpler sentences: Article 81 makes it possible to enact a law without approval of the Bundestag (parliament). If the Bundestag rejects a motion of confidence, but neither is a new chancellor elected nor is the Bundestag dissolved, the chancellor can declare a draft law to be "urgent".