1.stiffer a.更硬的

The needle catching problem is an old issue that we have ameliorated with stiffer needles and an improved corner cutting procedure, but it hasn't been fully solved, apparently.
針頭抓緊的問題是個老問題了，我們用更硬的針頭改善并改進了切割步驟，顯然還沒有完全解決。

2.endure v.忍耐；持久

I could not endure the insolence of his behaviour.
我不能再忍受他那傲慢無禮的行為了。

3.material n.材料；原料；素材

The colour in this silk material will not fade.
這種綢布料子不會褪色。

4.engineer n.工程師

Hs is a civil engineer.
他是位土木工程師。

5.graduate n.畢業生

They graduate 30,000 engineers every year.
每年有3萬名工程師從學校畢業。