n.敲平頭頂?shù)娜耍磺闷筋^釘器

It would be unwise to change tack now. 現(xiàn)在改變方針是不明智的。

Tack the folds down before you sew them firmly into place. 先用大針腳將褶子松松地綴住，然后再將其縫紉到位。

I hammered a tack into the wall and hung a small picture from it. 我在墻上釘了一個(gè)圖釘，然后在上面掛了一張小圖片。

The speaker suddenly changed tack and left us all rather confused. 演講人突然改變了論調(diào)，把我們都搞糊涂了。

His brother is sharp as a tack; he got100 on every test. 他弟弟十分聰明伶俐，每次考試都得100分。

n.攻擊者；抨擊者

n.棧式存儲(chǔ)器；推積機(jī)；堆垛機(jī)；堆積者