Testplate
光学样板
🗣️ 情景例句
Thank you, Mrs. Martinelli.
谢谢， Martinelli太太。
Wise men chanbge their mind, fools never.
聪明人随机应变，愚蠢者固执己见。
But we do not need to send men down to get the oil out, as we must with other mineral deposits.
但是，我们不必像开采其他矿藏那样，把人送到地下去把石油取出。