Looking back helps insofaras it helps you learn from your mistakes.
回顾往事助人进步，基于它可以帮助你从错误中学习。
《柯林斯英汉双解大词典》
2
For one thing, they're reliable insofaras they're based on unbiased samples.
首先，如若它们基于无偏见的样本，那么它们就很可靠。
3
In a sense this is inescapable: meaning exists only insofaras it means to someone, and literary works are written in order to evoke sets of responses in the reader.