n.

1. 生存，活命[U]
   Subsistence is not possible in such conditions.

   在这种情况下是无法生存的。

2. 生计，赖以活命的东西[S]
3. 存在，内在性[U]
4. 【哲】（逻辑上的）成立；独立存在[U]

n.

1. the action or fact of subsisting.
   ▸the means of doing this.
   ▸ [as modifier] denoting or relating to production at a level sufficient only for one's own use or consumption, without any surplus for trade:

   subsistence agriculture.
2. chiefly Law  the state of remaining in force or effect.