unassailable
美 [ˌʌnəˈseɪləb(ə)l]英 [.ʌnə'seɪləb(ə)l]
- adj.无法摧毁的;不可战胜的;不容置疑的
- 网络无懈可击;攻不破的;无懈可击的

Adj.+n.
unassailable
1.无法摧毁的;不可战胜的;不容置疑的that cannot be destroyed, defeated or questioned
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Enterprises can't establish in an unassailable position in the market competition unless innovating constantly.
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