打開

Verb

 * 1) to open books, drawers, parcels, doors, etc.
 * 2) to switch on electronics, appliances, etc
 * 3) to start up; to open up; to expand; to widen
 * 4)  to open
 * 1) to start up; to open up; to expand; to widen
 * 2)  to open
 * 1)  to open
 * 1)  to open
 * 1)  to open

Noun

 * 1) a breakthrough

Verb

 * 1) to make a breakthrough