everything takes twiceas long as you plan for and produces results about half as good as you hoped theres no reason to be downhearted about this just allow for it and move on
每件事花费的时间都是你计划的两倍，而产生的结果却只有你希望的一半。没有理由为此沮丧，只要允许它，然后继续前进
以上为机器翻译结果，长、整句建议使用 人工翻译 。