“那时还小”常见的英文表述有：“I was still young at that time” 或者 “I was little at that time” 。
“young” 通常用来形容年龄较小，处于成长阶段，例如：“She was very young when she started learning the piano.”（她开始学钢琴的时候还很小。）
“little” 有“小的；年幼的”意思，比如：“The little boy was very cute.”（那个小男孩那时还很小很可爱。）
在“那时还小”这个语境中，“at that time” 表示“在那个时候”，明确了时间点。
所以，用 “I was still young at that time” 或者 “I was little at that time” 来表达“那时还小”是比较准确和常见的。
