The company planned on Monday to announce fare Guard, a service that guarantees that an airfare listed on the site will remain valid for a week, or Farecast will make up the difference.

公司计划在星期一宣布票价保护，这项服务保证在网上公布的的票价在一周内有效，否则机票预价就没有什么用了。

youdao

Little ones, be on your guard and try to remain as peaceful as possible for I will call on many of you to sound the last trumpet at a moment's notice.

小人儿s，保持警戒，尽可能保持平静，因为我会一经通知就请你们很多人去吹响那最后的号角。

youdao

On this night, however, the guard did not remain.

VOA: special.2009.12.31

As neighboring nations remain on guard for a missile launch or nuclear test that South Korean and U.S officials say could take place at any time, the focus north of the border is on planting rice, cabbage and soybeans.

NPR: NKorean Soldiers Put Down Arms To Help Plant Crops