Classes of exchange
[计] 电话交换局级别
🧩 词语组成解析
n. 级别, 阶级（class复数形式）
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
exchange
[ɪks'tʃendʒ]
n. 交换;交易;交易所;兑换（率）;
vt. 交换，互换;兑换;交换，调换;
vi. 交换，替换;进行易货贸易，作物物交换;[金融业]（货币）交换，兑换;
ex 表示\"出，出去\" + change交换，替换 → vt.交换；交流\r\nn.交换
🗣️ 情景例句
A cookie can't hurt, though.
但一片小甜饼不要紧。
Thank you for a wonderful meal.
谢谢你的美餐。
carrying with him in his pocket what remained of a bottle of medicine formerly prescribed for an indisposition of Mrs.Carlyle's.
衣袋里装上了一瓶他妻子不舒服时吃剩下的药。