standard 以什么样的标准来说 be below standard 没有达到标准、be up to standard达到标准 unsinkable 不会沉没的 un + v.
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讽刺的是，泰坦尼克号曾被宣传为不会沉没的船。
这艘轮船不仅是造船史上建造的最大的一艘船，而且也被认为是不会沉没的。
She was not only the largest ship that had ever been built, but was regarded as unsinkable .
这艘轮船不仅是造船史上建造的最大的一艘船，而且也被认为是不会沉没的。
She was not only the largest ship that had ever been built, but was regarded as unsinkable.
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