Dodecyne
十二(碳)炔
🗣️ 情景例句
You're welcome.
别客气，欢迎你再来。
None so deaf as those that won't hear.
置若罔闻。
English is spoken as a first language by most people in the USA, Great Britain, Canada, Australia and New Zealand.
在美国、英国、加拿大、澳大利亚和新西兰，大多数人都把英语做为第一语言。