invisible ink
noun [ U ] uk/ɪnˌvɪz.ɪ.bəl ˈɪŋk/ us/ɪnˌvɪz.ɪ.bəl ˈɪŋk/
隐形墨水
ink that cannot be seen until it is treated with chemicals or heat
It's a secret message written in invisible ink. 这是一条用隐形墨水写的秘密消息。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。