extremely important; essential

• crucial to success or effective functioning

极其重要；必不可少

• 对成功或运作至关重要

necessary to sustain life

• affecting life-or-death functions or organs

维持生命所必需

• 与生死攸关的功能或器官有关

full of life and energy

• lively; vigorous

充满生命力与能量

• 生气勃勃；精力充沛

able to live or develop

• biologically viable

能存活或发育

• 在生物学上可存活

relating to official records of births, deaths, etc.

• of vital statistics

与出生、死亡等的官方登记有关

• 与人口生命统计相关