Waller
n. 石垛工；煤矿井下充填工
🗣️ 情景例句
I'd appreciate that.
谢谢你让我使用电话。
It is a mistake to trust him.
信任他是个错误。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。