The black, long-shaped, honey-smeared workers fly timidly and furtively in and out of the hive: they do not sting, but crawl away at the sight of danger.

• 在出入孔胆怯而且狡猾地飞进飞出的，是黑色椭圆、粘满蜜糖的强盗蜂，它们不整人，遇危险便溜走。