Diarylamine
[机] 二芳香基氨
🗣️ 情景例句
Seven o'clock, I'll pick you up at your office.
晚7点，我去办公室接你。
No pain, no gain.
不劳则无获。
She was soon out of breath, but she continued to run.
只追了一会儿便上气不接下气了，但她还是继续追赶。