用法:
1 either of a pair of bags laid over the back of a horse or donkey 马褡子; 驴褡子.

用法:
2 bag attached to the back of a bicycle saddle （自行车後座上的）挂包.

• at pains(at the pains)
• at peace(in peace)
• at play(in play)
• at pleasure(at one's pleasure)
• at quiet(in quiet)
• at quiet(on the quiet)
• at risk to(at the risk of)
• at risk(at one's (own) risk)
• at sb's command(in sb's command)
• at school(in school)
• at sight of(at the sight of, in sight of)
• at sight(in sight)
• at stake(at the stake)
• at table(at a table)
• at table(at the table)
• at that rate(at this rate)
• at that(in that)
• at the age of(in the age of)
• at the back of(at the rear of, in the back of, in the rear of)
• at the back of(in back of)
• at the back of(on the back of)
• at the beginning(in the beginning)
• at the bottom of one's heart(from the bottom ofones heart)
• at the corner of(on the corner of, in the corner of)
• at the dinner table(on the dining table)