1 to go online

2 to connect to the Internet

3 (of a document etc) to be uploaded to the Internet

4 (tennis, volleyball etc) to move in close to the net

1 Internet

1 Sina, Chinese web portal and online media company

1 imitation

2 to simulate

3 to imitate

4 analog (device, as opposed to digital)

1 Australian Open (tennis tournament)

1 lit. to catch everything in the one net (idiom)

2 fig. to scoop up the whole lot

3 to capture them all in one go

1 lit. either the fish dies or the net gets torn (idiom)

2 fig. it's a life-and-death struggle

3 it's either him or me

1 to enter by exploiting a weak spot (idiom); to take advantage of a lapse

1 to let correct ideology guide practical work (idiom)

1 to feel guilty as a thief (idiom); to have sth on one's conscience