那位窗户清洁工正在用长杆擦洗高楼的玻璃。

The ___window-cleaner is using a long pole to scrub the glass on the skyscraper.

这种窗净剂能让玻璃闪闪发亮，而且没有气味。

This ___window-cleaner makes glass shine brightly and is odor-free.