We need to stress not only the effectiveness of helmets in saving lives, but the fact that helmet programmes are good value for money.

我们必须不仅强调头盔在拯救生命方面的效果，而且强调这一事实，即头盔规划物有所值。

youdao

The root issue, however, lies not in the money spent promoting channel partners, but in the effectiveness of channel partner initiatives.

其根源问题，然而，就在于钱没花了推动渠道合作伙伴，在渠道合作伙伴计划，但成效。

youdao

Fair and adequate test, but at the same time small enough so that if their effectiveness diminishes, you can detect it before you lose an inordinate amount of money.

你测试的次数要足够大，以给你的变数一个公平和充足的测试，同时，也要小，以防止它们的有效性降低，如果你亏损了很多钱，你就知道它失效了。

youdao

After all, had the Obama campaign spent the Facebook ad money earlier, the effectiveness of three months of repeat messaging surely would have trumped the one month they will now get with this campaign.

FORBES: What the Obama Campaign's Facebook Ad Buy Timing Says About Their Social Engagement

They should also analyse the effectiveness of each technique and intervention and adjust the way they spend the money accordingly.

BBC: Schools could do better with pupil premium, says Ofsted

Restrictive employment agreements crafted by law firms to protect their money management clients from nasty disclosures, have further undermined the effectiveness of the federal regulatory scheme.

FORBES: Hidden Crimes; Too Many Secrets: How Money Managers Hide Illegalities From Investors (August 1, 2000)