And their interference with smooth fluid flow can decrease fuel efficiency by up to 40 percent, a major problem for large vessels.

它们能减少大约40%的燃料利用效率，这对大船来说是个主要问题。

Moreover, technology can also decrease people's work efficiency if they become too reliant on automation.

此外，如果人们过于依赖自动化， 技术也会降低他们的工作效率。