1.After the unforgettably initial shock, he remembered the promise he had made to his son: "No matter what, I ll always be there for you! "
看到这令人伤心的一幕，他想起了曾经对儿子所作的承诺：“不论发生什么事，我都会在你身边。”
2.Unforgettably, their bodies were sprinkled with pink and white apple blossom petals from an adjacent orchard.
军官们尸身上散布着附近果园里飘来石竹花和白色苹果花。
3.I guarantee you an unforgettably purifying experience.
我保证你们会得到无法忘怀的净化。
4.This idiom is used to describe unforgettably beautifull singing.
这个成语就形容歌声的美丽与令人难忘。