Need to prepare: sink, water, salt.

1. First, pour an appropriate amount of water into the sink.

2. Next, pour an appropriate amount of salt into the water in the sink.

3. Then stir the water to quickly dissolve the salt and form a certain concentration of salt water.

4. Next, put the vegetables to be washed into the salt water in the sink.

5. Soak the vegetables in salt water for half an hour to sterilize them.

6. Finally, you can clean the vegetables.