Next it should be leak proof to prevent liquids from spilling on anything important and last it should have a mouthpiece that is entirely covered when not in use for hygiene reasons, particularly when working in a place like a hospital, Number four is a combination of a sleep mask and earplugs, Whether it's pulling a late night, studying for an exam or working an overnight shift at the hospital.
接下來它應該是防漏的,以防止液體濺到任何重要的東西上,最後它應該有一個口罩,在不使用時完全覆蓋,以保證衛生,特別是在醫院這樣的地方工作時,第四個是睡眠面罩和耳塞的組合,無論是拉夜班、學習考試還是在醫院上通宵班。