Pentacyclic
五环的
🗣️ 情景例句
It's about the size of the United States, but it has a population of only 16.5 million.
它和美国一般大，但人口却只有一千六百五十万。
This is a poem about frontier life in the United States.
这是关于在美国的边疆生活的一首诗。
'Well,' I said to the manager, 'there is still some honesty in this world!'
“是啊，”我对那位经理说，“这世界上还是有诚实可言的！”