a. marked by a tendency to find and call attention to errors and flaws
a. at or of a point at which a property or phenomenon suffers an abrupt change especially having enough mass to sustain a chain reaction
a. characterized by careful evaluation and judgment
s. urgently needed; absolutely necessary
a. 批评的, 决定性的, 危险的, 临界的
[医] 危象的; 临界的, 极期的