plaintive /ˈpleɪntɪv/ adjective Learner's definition of PLAINTIVE
[more plaintive; most plaintive] formal
: expressing suffering or sadness : having a sad sound（声音）悲伤的，痛苦的 -
a plaintive [=mournful, sorrowful] sigh痛苦的叹息
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We could hear the plaintive cry of a wounded animal in the woods.我们能听见森林里受伤动物的痛苦叫声。