It's not because fresh ingredients are hard to come by.

这并不是因为新鲜的食材很难买到。

youdao

Because fresh water is lighter, care had to be taken not to draw down the lake too much in any given year lest the covering layer of fresh water becomes too light to hold the salt water down.

因为淡水比重较轻，所以每一年从湖中取水都需要慎之又慎，否则顶层淡水过少会无法覆盖咸水。

youdao

Because of such leaks, the air in an average home was replaced by fresh outdoor air about once an hour.

存在这样的裂缝，一个普通房屋里大约每小时会置换一次新鲜的室外空气。

youdao

She says it remains fresh and unusual because the event does not try to tell society's views about the performing arts.

VOA: special.2009.08.05

Yes, one of my favorite burgers because everything is fresh

喜欢，我最喜欢的汉堡包之一，因为一切都是新鲜的，

In&Out 之秘密 - SpeakingMax英语口语达人

At this office, you worked only from 8:30 in the morning until 4 in the afternoon because your boss wanted you to stay fresh and eager.

VOA: standard.2010.03.08

Because fresh cranberries are available only a couple of months of the year, this gave bakers an opportunity to have them available throughout the year.

FORBES

This is because fresh menu items which are readily available in Fort Polk, LA in April may not be available at Fort Greely, Alaska until July.

WHITEHOUSE: Healthy Food for Kids Is a Matter of National Security

In the case of silver, the net length in both the disaggregated and legacy reports fell in large part because of fresh selling.

FORBES: Fund Net Length Stabilizes In Gold, Continues Falling For Other Precious Metals