Keep the tape down tight, with no slack between the tape strips.

要把胶带贴牢靠，不要有松弛的部分。

youdao

In this commodity business, there is no slack with which to absorb fuel cost increases.

FORBES: The gas trap

"As a result they are now so overstretched that there is no slack left in the system, " he said.

BBC: Safety scare grounds Lynx helicopters

No slack demand there, the factory is cranking away so relentlessly that the Lorax has taken up residence in the parking lot.

FORBES: Corporate America Working Toward "Headcount Zero"