| 单词 | 一个时期 |
| 释义 | 〔Paleozoic〕Of, belonging to, or designating the era of geologic time that includes the Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, and Permian periods and is characterized by the appearance of marine invertebrates, primitive fishes, land plants, and primitive reptiles. See table at geologic time 古生代的：地质时代的一个时期的，属于这个时期的或这么称呼的，包括寒武纪、奥陶纪、志留纪、泥盆纪、密西西比纪、宾夕法尼亚纪和二叠纪时期，并且以海洋无脊椎动物、原始鱼类、陆地植物和早期爬行动物的出现为特征 参见 geologic time〔unstopped〕an era of unstopped progress in medicine.医学上顺利进步的一个时期〔bumpkin〕The termbumpkin may at one time have been directed at an entire people rather than that segment of the population living in a rural area. The first recorded appearance of the word in 1570 is glossed by the Latin wordBatavus, "Dutchman,” thus making plausible the suggestion thatbumpkin may come from either the Middle Dutch word bommekijn, "little barrel,” or the Flemish word boomken, "shrub.” The connection would be between a squat object and the short, rotund figure of the Dutchman in the popular imagination.Any bumpkin would surely prefer this etymology to another suggestion thatbumpkin is a derivative of bum, "the rear end.” 单词bumpkin 有一个时期意指住在乡下的所有人而不是其中的一部分， 这个词于1570年第一次出现是用拉丁词Batavus “荷兰人”注解的。 使得下面这个解释似乎是说得通的，即bumpkin 有可能起源于中古荷兰词语 bommekijn “小圆桶”的意思，或起源于法兰德斯语 boomken “灌木”的意思。 这两者之间的联系在一般的想象中就如同一个矮胖的物体同圆胖的荷兰人间的关系。而任何一个乡下人都确信无疑这个词源有另一个解释，即bumphin 是从 bum 演变而来的，该词的意思是“尾部末梢” 〔amortize〕To write off an expenditure for (office equipment, for example) by prorating over a certain period.摊还，摊销：用在一个时期内以按比例分配的方式注销一笔经费（如办公设备）〔Triassic〕Of, belonging to, or being the geologic time, system of rocks, and sedimentary deposits of the first period of the Mesozoic Era, after the Permian Period of the Paleozoic Era and before the Jurassic Period of the Mesozoic Era. See table at geologic time 三叠纪的，三叠系的，三叠纪岩石的：属于或关于中生代的第一个时期的，这个时期岩石系的和沉积矿床的，在古生代的二叠纪元后，中生代的侏罗纪之前 参见 geologic time〔pack〕The amount, as of food, that is processed and packaged at one time or in one season.包装数量：在一个时期或一个季节加工并包扎好的数量，如食品的数量〔Proterozoic〕Of, belonging to, or being the later of two divisions of Precambrian time, during which sponges, sea worms, and other forms of sea life appeared.原生代的，元古代的：前寒武纪两个时期中的后一个时期的，属于这个时期的，在这个时期的在这个时期海绵、海洋蠕虫和其它形式的海洋生命出现〔age〕A period in the history of the earth, usually shorter than an epoch:期，纪：地球历史进程中的一个时期，通常比世短：〔carry〕To deduct (an unused tax credit or a loss, for example) for taxable income of a subsequent period.扣除：为下一个时期需征税的收入而扣除（如未使用的税款或其损失）〔turn〕A point marking the end of one period of time and the beginning of the next:转变时期，交替时期：标志着一个时期的结束和下一个时期的开始的时间： |
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