No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么,但几乎可以肯定这并非意外。
She acted the role of the perfect servant for three years before Aunt Harriet discovered her 'little weakness'.
她担任“理想仆人”角色3年之后,哈丽特终于发现她有“小小的弱点”。