explain

Heel: Heel; One by one: follow and connect. Of a person's front foot followed by his back foot, followed by another. Describe a lot of new people, an endless stream.

Step 2 come in droves

Pronunciation: f ē n lá i tà zh √.

It is also called "in droves" because "to" and "to" have the same meaning and can be used interchangeably.

Interpretation: dispute: more, chaos; Stack: Repeat, many. Because "to" and "to" have the same meaning, the descriptions are constantly confused.

Step 3 come one after another

Explanation: it means that people's front feet follow their back feet one after another. Describe a lot of new people, an endless stream.