Vectron
超高频频谱分析仪
🗣️ 情景例句
It was very thoughtful of you to send flowers.
你送花来，想得真周到。
Did you go to the zoo this morning?
你今早去动物园了吗？
We aren't able to supply the third ad fifth items.
第三及第五项目，我们没有货供应。