0 necessary; that cannot be done without -- ซึ่งขาดไม่ได้
A dictionary should be considered an indispensable possession.
The text becomes a real handbook at this point, indispensable to those working with older adults with a range of difficulties and needs.
As the repositories and guardians of knowledge, libraries have been indispensable resources for universities throughout history.
For example, we don't understand the role of voices on popular records; we tend to picture them as indispensable when empirically they're not.
The institutional continuity has constituted the indispensable background on which all the history and actions have been developed.
In order to design programming languages to implement such organizational concerns, computational theories and semantics for social/organizational concepts and relations are indispensable.
It is concluded that the latter are indispensable.
The detection of a variety of species and genotypes stresses the importance that molecular characterization is indispensable before drawing conclusions of medical or epidemiological significance.
To clearly represent a relationship between required functions and realizing structure is indispensable for determining a platform and upgrade modules.