Vacuum technology
[化] 真空工艺
🧩 词语组成解析
🗣️ 情景例句
my grandfather is
我爷爷
Do you think there is something wrong with the contract?
你认为合同有问题吗？
She was choosing a book. He told her about the accident.
她正在选书。他将发生的情况告诉了她。