用法:
1 (a) [C] organization or enterprise (esp a farm) owned and controlled by the people who work in it 集体组织; 集体企业; （尤指）集体农场:
a workers' collective 工人的集体组织.
(b) [CGp] these people as a group 集体.

用法:
2 [C] = collective noun.

• at best(at one's best, at its best)
• at cost of(at a cost of, at the cost of)
• at danger(in danger)
• at dusk(in the dusk)
• at ease(at one's ease)
• at fault(in fault)
• at first glance(at first sight)
• at first(from the first)
• at full length(at great length)
• at great pains(to great pains)
• at great pains(with great pains)
• at hand(at sb's hand)
• at hand(in hand)
• at it(in it)
• at last(in the end)
• at least(in the least)
• at leisure(at one's leisure)
• at longest(at most)
• at night(in the night)
• at no time(in no time)
• at once(all at once)
• at one time(for a time)
• at one's back(on one's back)
• at one's best(in one's best)
• at one's discretion(to one's discretion)