We're expected to just do it at the drop of a hat.
我们预计会毫不犹豫地做到这一点。
If you need help, just call on Mike. He can come at the drop of a hat.
如果您需要帮助,请致电 Mike。他可以随叫随到。
2014, Becky Rutledge, Miss Becky's Charm School[1], Citadel Press, →ISBN:
Let's face it. We are swollen up like an overfed slug, our breath stinks, the tiniest irritant is magnified ten thousand times, and we cry at the drop of a hat.