http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）
英语
西班牙语
fortification [美 ˌfɔrdəfəˈkeɪʃ(ə)n, 英 ˌfɔːtɪfɪˈkeɪʃ(ə)n] 名词
1. fortification (defensive works) 军事:
2. fortification U (act of fortifying) 军事:
- invulnerable fortifications
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西班牙语
英语
在《PONS词典》中的词汇
英语
西班牙语
fortification [ˌfɔ:tɪfɪˈkeɪʃən, 美 ˌfɔ:rt̬ə-] 名词 无复数
西班牙语
英语
在《PONS词典》中的词汇
英语
西班牙语
fortification [ˌfɔr·t̬ə·fɪ·ˈkeɪ·ʃən] 名词
西班牙语
英语
单语范例（未经PONS编辑处理）
Separate also had the ability to transform into a large metal sphere, making it practically invulnerable to any attack.
en.wikipedia.org A man with such spirit power would be invulnerable in battle.
en.wikipedia.org He becomes invulnerable when his heart was removed and hidden.
en.wikipedia.org Winged serpents are invulnerable to lightning but vulnerable to fire.
en.wikipedia.org They also listed him as one of video game's most lovable lummoxes and stated that he seemed invulnerable until his weakness was discovered.
en.wikipedia.org