31.   The unions are battling for job security, better wages and more vigorous efforts to combat unemployment.

a. + effort >>共 805
diplomatic 4.27%
international 3.51%
concerted 1.94%
joint 1.85%
new 1.71%
lobbying 1.34%
best 1.26%
marketing 1.21%
similar 1.18%
fund-raising 1.06%
vigorous 0.15%
vigorous + n. >>共 449
campaign 6.49%
exercise 4.40%
debate 4.18%
defense 3.58%
activity 2.39%
growth 2.39%
effort 2.31%
opposition 2.01%
competition 1.72%
enforcement 1.57%
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