hula hoop

基本解释

These are hula-hoop-shaped double-stranded units of DNA that can be moved easily from one cell to another.
它们是形似呼拉圈的双股DNA单位，可以被轻易地从一个细胞转移到另一个细胞。
Other activities included a bicycle parade, "hula-hoop" twirls and a brief swim in Copenhagen's famous harbor.
此外，圣诞老人们还将参加自行车游行、转呼啦圈和在哥本哈根著名港口短距离游泳等活动。
Ringworld. Larry Niven. A space expedition crashes onto an artificial pla- shaped like a giant hula hoop 190 million miles in diameter.
一支星际远征队迫降到一个直径1.9亿英里形如呼啦圈的人造行星上。
xiaozhuanke.com

At one of the reception desks, a pretty, cleavage-baring brunette named Heaven challenged him to a hula-hoop contest.
NEWYORKER: Happy Feet
The line to get in snaked around the block, and a hula-hoop troop kept the crowd outside amused.
FORBES
The risk is that, unless their strictures lead to action, the monitors' job will seem pointless—and go the way of the crossing-sweeper, typewriter designer and hula-hoop maker.
ECONOMIST: Monitored polls, ignored reports