slackens; slackened; slackening
slackens; slackened; slackening
Learner's definition of SLACKEN
1
a [no object] : to become slower or less active : to slow down放慢;减缓;减弱 b [+ object] : to make (something) slower or less active使放慢;使减弱 2
: to become less tight or to make (something) less tight : loosen(使)放松,松弛 [no object]
[+ object]