Central circulating tube
[化] 中央循环管
🧩 词语组成解析
a. 循环的, 流通的\\n[经] 流动
🗣️ 情景例句
Fine, thank you.
很好， 谢谢你 。
We always open Christmas present on Christmas morning.
我们通常在圣诞节早晨打开圣诞礼物。
Soon the hobby leads to travel, perhaps to a meeting in another town, possibly a trip abroad in search of a rare specimen, for collectors are not confined to any one country.
用不了多久，有这种爱好的人便开始旅行，也许是去另一个城市参加会议，也可能是出国寻找一件珍品，因为收藏家是不分国籍的。