US retailer Costco was forced to close early on its opening day in China, after the store was swamped with shoppers. Buyers battled long queues and traffic chaos, before the Shanghai store was shut hours early due to "overcrowding". Costco's push into China comes as other foreign retailers have struggled to compete with local rivals.
be swamped with/by: 充满了……；挤满了……
· In the summer, all the sights in Beijing are swamped by tourists.
push vt. （商业）努力，攻势 (when someone, especially a business, tries to get or achieve something)
· The company has recently made a big push into the Japanese market.
· when push comes to shove: 情况变得紧急时
· If push comes to shove, we can always sell the car.