第三人称单数:piggybacks 现在分词:piggybacking 过去式:piggybacked
1.同“pickaback”
1.Same as pickaback
1.if something is piggybacked on another person’s work or on an important statement or law, it is added or connected to it
1.if you give someone a piggyback, you carry them on your back with your arms supporting their legs