a. 胁迫的, 危险的

[法] 威胁的, 恐吓的, 危险的

v pose a threat to; present a danger to

v to utter intentions of injury or punishment against:"He threatened me when I tried to call the police"

v to be a menacing indication of something:"The clouds threaten rain"

s threatening or foreshadowing evil or tragic developments

s darkened by clouds