用法:
1 state of being perplexed; bewilderment 困惑; 混乱:
She looked at us in perplexity. 她茫然地望著我们.

用法:
2 state of being complicated or difficult 复杂; 困难:
a problem of such perplexity that it was impossible to solve 复杂得无法解决的问题.

• ask(ask for)
• asleep(sleepy)
• assure(ensure)
• at a guess(by guess)
• at a loose end(at loose end)
• at a standstill(to standstill, to a standstill)
• at a stretch(at full stretch)
• at a time(at one time)
• at a time(at the time)
• at all costs(at any cost)
• at all events(in any event)
• at all(of all)
• at an end(at the end)
• at an end(in the end)
• at athe rate of(at a speed of)
• 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)