heavy duty

基本解释

Heavy duty production-level disks are even larger.
职责重大的生产级磁盘甚至更大。
The real heavy duty work of the translating process is " quality control ".
这一阶段真正繁重的工作是“ 质量控制 ”。
The bridge will be made of chicken wire and matting, woven together andtied to both the trees and two heavy duty telegraph poles at eitherside of the road.
这条高空通道由细铁丝网和草堆编织而成，被绑在马路两侧的两棵树和两根重型电线杆之间。

We're not going to get into that 'cause that takes us into heavy-duty music theory, but it's--if we don't have root position then we've got some other note of the triad in the bass, and we've got some kind of chord inversion, so that's what that particular term means up there.
我们就不深究这个问题了，这是一个冗长的音乐理论，但是如果没有了原位，三和弦的低音被另一个音所替代，这就是一种和弦转位，这就是这个词在这里的意思。
耶鲁公开课 - 聆听音乐课程节选

Forbes.com: How does the world look from the perspective of a heavy duty truck maker?
FORBES: Big Trucks On A Bumpy Road
Cummins also cited a drain in North American demand for heavy duty trucks and power generators.
FORBES: Move up http://i.forbesimg.com t Move down
It's part of a federal program to cover damaged houses for free with heavy duty blue tarps.
NPR: After Rita: Signs of Life in Lake Charles, La.