unknown material翻译

unknown material的基本解释

读音: 美: 英:

未知材料：指未知的或无法识别的材料。

例句

The motions of this visible material reveal that it is mere flotsam on an unseen sea of unknown material.从这类可见物质的运动显示，它们只不过像是在未知物质组成的不可见海洋上飘流的残骸。
Mankind has created hitherto unknown material and spiritual wealth in the 20th century, but has also been subjected to the scourge of wars and the threat of war.在20世纪里，人类创造了前所未有的巨大物质和精神财富，同时也惨遭战争劫难和战争威胁之苦。
She said the man, who is in his 20s, was carrying a backpack that contained suspicious items, including a non-explosive, unknown material that will require further investigation.她说，这个男人大约20多岁，背着一个背包，里面装有可疑物品，包括：一个未知的防爆材料，具体情况将需要进一步调查。
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