Acetals
缩醛
🗣️ 情景例句
from the various generations of future users.
从不同辈份的未来使用者中。
What does your father do?
你父亲做什么工作？
The editor at once sent the journalist a fax instructing him find out the exact number of steps and the height of the wall.
”编辑立即给那位记者发去传真，要求他核实一下台阶的确切数字和围墙的高度。