1. 松紧带;橡皮筋
Elastic is a rubber material that stretches when you pull it and returns to its original size and shape when you let it go. Elastic is often used in clothes to make them fit tightly, for example round the waist.
e.g. ...a piece of elastic.
一根松紧带
e.g. ...my plaid Bermuda shorts with the elastic waist.
我那件束腰的格子呢百慕大短裤
2. 有弹性的，有弹力的
Something that is elastic is able to stretch easily and then return to its original size and shape.
e.g. Beat it until the dough is slightly elastic.
一直搅打，直至生面团略有弹性。
e.g. ...an elastic rope.
有弹性的绳子
3. （想法、计划、政策等）有通融性的，灵活的，能变通的
If ideas, plans, or policies are elastic, they are able to change to suit new circumstances or conditions as they occur.
elastic的翻译
e.g. ...an elastic interpretation of the rules of boxing...
对拳击规则的灵活解释
e.g. If export and import demand is elastic, then the change in trade volumes will operate to remove the surplus.
如果进出口需求具有灵活性，那么贸易额的变化则可能会抵消盈余。
4. 同 rubber band
An elastic is a rubber band .