piggyback

詳細解釋：

pig.gy.back

adv.（副詞）
adj.（形容詞）
On the shoulders or back:
在背上，在肩上：
例句：
ride piggyback; a piggyback ride.
騎在肩上；在肩上騎

By or relating to a method of transportation in which truck trailers are carried on trains, or cars on specially designed trucks.
背負，肩扛：運輸的一種方式，其中貨車掛車載在火車上，或卡車載在特殊設計的貨車上；或與之有關的
In connection with something larger or more important:
與更大或更重要的事相關的：
例句：
a tariff provision that came piggyback with the tax bill; a piggyback provision to a new piece of legislation.
與稅法隨之而來的關稅規定；與一條新法律的頒布相關的規定

n.（名詞）
The act of transporting piggyback.
背負式運輸，馱運聯運
v.（動詞）
pig.gy.backed,pig.gy.back.ing,pig.gy.backs
v.tr.（及物動詞）
To cause to be aligned with an issue, for example, that is larger or more important:
附帶發生：使…與一個問題、如更大或更重要的事相連：
例句：
.a $2.5-million federal grant to piggyback city and state subsidies.(New York)
.將會帶來城市和國家資助金的兩千一百五十萬聯邦貸款.(紐約)

v.intr.（不及物動詞）
To function as if carried on the back of another:
象背負在別的東西上起作用：
例句：
.This reagent will piggyback onto an enzyme.(Seth Rolbein)
.這個試劑將隨酶而起作用.(塞特·羅班)

來源：
Alteration of dialectal pig back
方言 pig back的變化
alteration of pickaback, pickback, pick pack
pickaback的變化, pickback, pick pack
probably dialectal pick [to throw] variant of pitch 2
可能為 方言 pick [扔掉] pitch2的變體
back
back
or pack
或 pack