extra still

例句：

1. 1. She has an extra setof keys for the car.
   她有汽车的一套额外的钥匙。
2. 2. The extra workloadis causing stress for the team.
   额外的工作量给团队带来了压力。
3. 3. Extra care should betaken when handling fragile items.
   处理易碎物品时应该格外小心。