Electronfractography
断口电子显微镜检验
🗣️ 情景例句
We haven't heard from him for weeks but we're still hoping for a letter.
我们已经有几个星期没有他的消息，但仍然盼望着他的来信。
Would you tell her Tom Gray Called?
请你告诉她汤姆i格雷来过电话，好吗？
Can you help her?
你能帮她吗？