There was a slackening of western output during the 1930s.20世纪30年代西部的产出有所减少。Wang replied without slackening his pace.王三毛一边回答,一边只顾走.Indeed, its idea was slackening in New England by the early eighteeth century.其实, 到了十八世纪初...

slackening的音标：...

v.（使）松弛( slacken的现在分词 )，（使某物）放慢，松懈下来，变迟缓...