in a way that does not allow any air or other substance to leave or enter

They were quarantined for three weeks under hermetically sealed conditions. 他们在密封的条件下被隔离了三个星期。

Companies resorted to hermetically sealed packaging. 公司采用了密封包装的方式。

in a way that involves little communication with people living outside a group or place

He has been on his Michigan farm for 25 years, living simply and hermetically. 他在密歇根州的农场生活了25年，生活简朴，与世隔绝。

Thoreau scribbled hermetically in the Massachusetts woods. 梭罗离群索居住在马萨诸塞州的森林里涂涂写写。