1. The crisis has led to the closure of a number of nonessential government services. 这场危机已导致了一些可有可无政府服务设施的关闭。
2. About 9% attempted to conceal "nonessential Internet use", and nearly 4% reported feeling "preoccupied by the Internet when offline". 约有9%的人试图隐瞒自己“非必要的上网行为”，近4%的人报告说，他们“离线时也感觉被网络占据着大脑”。
3. Avoid nonessential tasks. 避免不重要的任务。
4. Healthy nonessential workers were told to go home. 医疗辅助人员们被告知回家。
5. The nonessential amino acids were markedly reduced. 这两个氨基酸从丙酮酸获得它们的碳架。
