• 反复试验fǎn fù shì yàn trial and error
• 患难huàn nán adversity, trials and tribulations
• 久经考验jiǔ jīng kǎo yàn Old and trial
• 千辛万苦qiān xīn wàn kǔ innumerable trials and hardships
• 试错法shì cuò fǎ trial-and-error method; trial-and-error procedure; cut-and-try method; trial and error
• 夫妇关系fū fù guān xì connubiality; bed and board
• 联合国开发委员会lián hé guó kāi fā wěi yuán huì Trade and Development Board, TDB
• 联合国贸易与发展理事会lián hé guó mào yì yǔ fā zhǎn lǐ shì huì United Nations Trade and Development Board
• 刨花板及贴面páo huā bǎn jí tiē miàn shaving board and attaching veneer
• 膳宿shàn xiǔ board and lodging
• 食宿shí xiǔ room and board
• 成药chéng yào nostrum, patent medicine
• 公地持有证gōng dì chí yǒu zhèng land patent
• 黑漆皮hēi qī pí patent leather
• 黑漆皮鞋hēi qī pí xié patent leather shoes
• 蜡布là bù cerecloth; patent cloth
• 秘方药mì fāng yào patent medicine
• 欧洲专利公约ōu zhōu zhuān lì gōng yuē European Patent Convention
• 漆革qī gé enameled leather; japanned leather; patent leather
• 漆皮qī pí coat of paint; patent leather
• 侵犯专利权qīn fàn zhuān lì quán infringement of patent; infringement on the patent right
• 请准专利qǐng zhǔn zhuān lì patent
• 商务部专利局shāng wù bù zhuān lì jú patent office
• 申请专利shēn qǐng zhuān lì apply for a patent
• 授予专利权shòu yǔ zhuān lì quán grant of a patent; patenting

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longsuffering, long-suffering, long-term, long-tested, longthrust, longtime, long-time, longtimer, Longton, long-tongued,

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3G, 401(K), a,

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longyi, lonicera, loniceraflavone, lonicerin, loniceroside, lonneal, lonnealing, Lonsdale, Lonsdaleiidae, lonsdaleite,

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3G, 401(K), a,

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look about for sth, look after, look after sb, look around, look at, look at sth, look back, look back on sth, look back upon, look down,

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3G, 401(K), a,