1、I worry that Microsoft is introducing Thumbtack at a bad time.
我擔心，微軟推出了圖釘在一個壞的時間。

2、The thumbtack pricked his index finger.
大頭針扎了他一下手指。

3、"Ouch!"cried the principal"there is a thumbtack in this chair"
“哎喲，”校長叫道，“這把椅子上有顆圖釘。”

4、"Ouch!" cried the principal. "There is a thumbtack in this chair!"
“哎呦！”校長叫道，“這把椅子上有個圖釘！”

5、I press the thumbtack into the board with thumb.
我用大拇指將圖釘按在木板上。

thumbtack翻譯