1. TPN is commonly used in patients who cannot eat or adequately absorb nutrients through the gastrointestinal tract.
（中文：TPN常用于无法进食或无法充分通过胃肠道吸收营养的患者。）

2. The nurse carefully monitored the patient's TPN infusion to ensure proper administration.
（中文：护士仔细监测患者的TPN输注，以确保正确的给药。）