out-to-out

(warming)-up

“avoid peak and fill up valley” measures

2D clean up

30 years after the Reform and Opening Up

30 years since the introduction of reform and opening up

a big-pile up involving six cars

a dark horse bobbing up

a principle of drawing up

a telephone hot-line has been set up

Abdominal-wall-take-up

ability to block up

acceleration pick up

accumulated flaring up rate

act up

act up to

act up to one’s opinions

activity build up

Add Up

add up to