It's difficult to wind off all the thread.

把这些线都解开很不容易。

youdao

It may take an hour to wind off all the thread.

把所有线都松下需一个小时。

youdao

It may take some time to wind off all the thread.

也许得花些时间才能把所有这些线放开。

youdao

Pieces of gypsum broke off. The wind wore them away to a size small enough to pick up and carry for short distances.

VOA: special.2010.01.04

The 32-year-old now intends to take some time off to wind down then see what happens from there.

BBC: 'Incredible feeling' for Chris Hoy

With a key federal tax incentive about to expire, the U.S. installed a 5.5 gigawatts of wind power in December to cap off a year that saw a record 13.2 gigawatts of wind energy come online, according to a report released Friday by research firm Bloomberg New Energy Finance.

FORBES: U.S. Installed Record 13.2 Gigawatts Of Wind Energy In 2012

Companies like Google are planning to invest billions in deepwater transmission networks to accomodate offshore wind farms off the East Coast.

FORBES: Turn Baby, Turn - Offshore Wind Power Poised for Major Growth in U.S.