形容詞 on-line:

1. on a regular route of a railroad or bus or airline system
2. connected to a computer network or accessible by computer
3. being in progress now

on-line

adj.（形容詞）
Computer Science
【計(jì)算機(jī)科學(xué)】
Under the control of a central computer, as in a manufacturing process or an experiment.
聯(lián)機(jī)的：在生產(chǎn)過程或?qū)嶒?yàn)中，受主機(jī)控制的
Connected to a computer network.
在線的：和計(jì)算機(jī)網(wǎng)絡(luò)系統(tǒng)聯(lián)在一起的
Accessible via a computer or computer network:
網(wǎng)上的：通過一個計(jì)算機(jī)或計(jì)算機(jī)網(wǎng)絡(luò)可獲得的：
例句：
an on-line database.
網(wǎng)上數(shù)據(jù)庫

In progress; ongoing:
正在進(jìn)行中的：
例句：
on-line editorial projects.
正在進(jìn)行的編輯項(xiàng)目