Focus on the pronunciation of stretch
English definition of “stretch”
a stretch › used to describe something that you think will be very difficult to achieve, very expensive, etc.: The price tag on the business may prove to be a stretch.
20 hours/5 days/6 weeks, etc. at a stretch › if you do something for 20 hours, etc. at a stretch, you do it continuously for that period of time: Workers on an oil rig often do 12-hour days for 14 days at a stretch.
work/be at full stretch › to be working as hard as you possibly can: OPEC members are at full stretch and cannot pump more oil.