老大的英文：
mugwump

edgar, the eldest, would not condescend to him at first
起初老大埃德加不屑同他为伍。

When they returned home, Tun-weng said, "Our Eldest must certainly be henpecked
回家之后，遯翁道:“老大准怕老婆。

He's the leader of the observing group.
他是观察组的老大。

A young idler, an old beggar
少壮不努力老大徒悲伤

The older boy instigated a quarrel between his two young brothers
老大故意煽动两个弟弟相互争吵。

When I turned round he was pointing a dirty great gun at me.
我转过身来，他用一支老大的枪对准我。

The family were so ashamed of the eldest son that they bundled him off
家里人都为老大感到羞愧,以致于将他打发走了。

Hey chief, where do you think we should go dancing tonight?
老大，你觉得我们今晚应该去哪里跳舞？

"Xue Pan is another of those greedy-guts who keep""one eye on the bowl and the other on the pan."
那薛老大也是"吃着碗里看着锅里"的

The Prefect fulfilled punctually, although with reluctance, the terms of his compact with the Chevalier
警察厅长虽然心里老大不高兴，但也总算如期履行了他和爵士讲定的条件。