拥挤 (yōng jǐ): đông đúc

At eight in the morning, the subway platform is packed with people rushing to work, and the train car is so crowded that there's no room to even turn around.

On holidays, the shopping street is always very crowded; people are packed shoulder to shoulder, and after a few steps you have to stop and wait for the people ahead to move.

When this trendy restaurant first opened, it was too crowded; the line stretched from the door all the way to the street corner, and we waited two hours before getting in.

During the National Day holiday, the vehicles on the highway were extremely crowded; the trip that normally takes three hours took six hours to arrive.

On weekends, the library study room is very crowded; if you go late, you can't find an empty seat and have to sit on the floor in the hallway.