Pacteron
铁碳磷母合金
🗣️ 情景例句
I hate to bring this up, but this is a nonsmoking zone.
对不起提醒一下，这儿是禁烟区。
Don't worry about it.
别担心。
The child learning to see, first distinguishes only two-dimensional shape;
正在学看东西的儿童起初只会分辨二维形态，