Desulphuration
除硫
🗣️ 情景例句
And if I can be of any help,
如果我能有所帮忙的话，
This man digs foundations for skyscrapers.
这个人在挖着高层大楼的地基。
All this was comparatively slow until, with the coming of science, the tempo was suddenly raised.
所有这些发展都比较缓慢，而随着科学的到来，增长的速度才突然加快。