Tcpo
abbr. tricetylphosphine oxide 氧化三（个）十六烷基磷
🗣️ 情景例句
How are you?
你好吗？
I tried to call you, but the line was busy.
我试着给你打电话，但老占线。
She usually wears that round her middle when she goes out.
她外出时总是把它系在腰上。