back up
🇺🇸
/bæk ʌp/
🇬🇧
/bæk ʌp/
to help or support someone
My family will always back me up when I need help.
我的家人始终会在我需要帮助时支持我。
to confirm that what someone says is true
Claire will back me up, so you can believe what I say.
克莱尔会证实我所说的话,所以你可以相信我。