half-tap

例句：

1. 1. She half-tapped the doorbell button to see if it was working.
   她轻轻按了一下门铃按钮，看看它是否在工作。
2. 2. The chef asked the waiter to half-tapp the tablecloth for a better view.
   厨师让服务员轻轻触碰桌布以便有更好的视野。
3. 3. He half-tapped the keyboard with his fingertips to find the correct key.
   他用指尖轻轻触碰键盘以找到正确的键。