The next line of Yoga Sutras does not involve any difficulty for translation, as well as for commentary and understanding.
प्रच्छर्दनविधारणाभ्यां वा प्राणस्य ॥ ३४॥
1.34 pracchardana-vidhāraṇābhyām vā prāṇasya
pracchardana (n.) – a well-known word that in terms of literature on yoga denotes “exhalation”. It consists of the prefix pra + cchardana - a noun produced from the root chṛd – “to eject”, “to outthrow”.