It takes about three weeks to a month to notice significant changes in your weight due to altering your training program.

由于改变了训练计划，需要大约三周到一个月的时间才能注意到自己体重的明显变化。

youdao

My employee, Biff, has been late to work the past three days; I notice this and conclude that Biff is lazy and does not care about his job.

我的员工比夫过去三天上班老是迟到；我注意到了这一点，得出结论：比夫很懒，不关心自己的工作。

youdao

The contract can be terminated by either party with three months' notice.

合同的任何一方如提前三个月通知，均可终止本合同。

《牛津词典》

She says people would not even notice a difference in taste with three grams, or one-half teaspoon, less salt per day.

VOA: special.2010.01.27

2 3 4 Now, at this point in the story, one, two, three, four, so notice what seems to be happening here.

到这一步，注意将会发生什么。

哈佛公开课 - 计算机科学课程节选

Now, the first thing to notice is that to get the conclusion we need all three premises.

现在 首先要注意的是,只有三个前提全部成立才能得出结论

耶鲁公开课 - 死亡课程节选

Some patients complained they were only given three weeks notice of the change and other surgeries were inconvenient.

BBC: Stephen Dorrell

Instead of a three-year lock-in they would have to agree only to a three-month notice period followed by three months of inactivity.

ECONOMIST: The battle at Lazard

At least three months notice must be given to customers following any decision to end the guarantee, and fixed term accounts will retain the guarantee for the term of the product.

BBC: Northern Rock split date is set