pick-up up hay baler

boot-up speeding up

half built up crank shaft [= semi-built-up crank shaft

Hold Up And Stop Up Rotating

on the up-and-up

put up or shut up

sequence of train breaking up and making up

up-and-up

up-supply and up-discharge

up-supply and up-exhaust

WARM UP; WARMING UP

Catching-up industry policy

Catch-up oversea R&D investment

(warming)-up

’up-wind’ method

“avoid peak and fill up valley” measures

2D clean up

2-up-down device

30 years after the Reform and Opening Up