record plastics

例句：

1. 1. She recorded the event on video for future reference.
   她把事件录下来，以便将来参考。
2. 2.The police are investigating the incident as a record of their training.
   警方正在调查这起事件，作为他们训练的记录。
3. 3.We need to keep a record of all our expenses for tax purposes.
   我们需要保留所有开支的记录，以备税务目的。