单词	penetration
释义	penetrationpen‧e‧tra‧tion /ˌpenəˈtreɪʃən/ noun Examples EXAMPLES FROM OTHER DICTIONARIES foreign penetration of the British secret service Military sources reported several enemy penetrations of U.S. airspace. Protect the wood against water penetration. Video conferencing is expected to continue its penetration into the corporate marketplace. 1[countable, uncountable] when something or someone enters or passes through something, especially when this is difficult:  Cover the entire device to prevent water penetration.penetration of The attack failed to lead to any deep penetration of enemy territory.2[countable, uncountable] the degree to which a product is available or sold in an areapenetration of the rise in import penetration of the domestic market3[uncountable] when a system of beliefs enters a society and becomes acceptedpenetration of the penetration of Marxism into Latin America4[uncountable] when someone joins and gets accepted by an organization, business etc in order to find out secret informationpenetration of foreign penetration of the British secret service5[uncountable] when a man puts his penis into a woman’s vagina or into someone’s anus6[uncountable] a special ability to understand things very clearly and completely
随便看	Abraham abrasion abrasive abrasively abreast abridge abridged abridgement abroad abrogate abrogation abrupt abruptly abruptness ABS abs Absalom abscess abscond abseil absence absent absentee absentee ballot absenteeism

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