extra best quality

例句：

1. 1. She has an extra hour to spare this morning.
   她今天早上有额外的一个小时可以休息。
2. 2. The extra effort will pay off in the end.
   额外的努力最终会得到回报。
3. 3. Extra care should be taken with fragile items.
   对于易碎物品应该额外小心。