coattail

]
n. 上衣后摆, 燕尾服的燕尾

coat.tail

n.（名词）
The loose back part of a coat that hangs below the waist.
男上衣后摆：上衣没有被固定的后部，悬垂到腰下
coattails The skirts of a formal or dress coat.
coattails 夜礼服，礼服女裙

<习惯用语>on (someone`s) coattails
With the assistance of another:
得到他人的帮助：
例句：
won the mayor`s post on the senator`s coattails.
得到参议员的帮助赢得市长的职务

on the coattails of
As a result of the success of another:
因他人成功的结果：
例句：
elected to office on the coattails of a popular governor.
由于一位受人爱戴的官员的帮助而被推选到政府机关

Immediately following or as a direct result of:
紧随其后或作为直接结果的：
例句：
resigned on the coattails of the scandal.
因丑闻而辞职