一年两次的

Article 17 of the foreign passport (including spouses and children who are minors), but by the Beijing work and other relevant proof residence to bid for two years, the public security organ or the foreigner's residence permit effective entry visa (many year shall not exceed passport validity), Short-term calchas departure, Beijing may apply for visa.

第十七条持外国护照的留学人员，可凭《北京市工作居住证》等有关证明向公安机关申办两年有效的外国人居留许可或一年多次出入境签证；短期来京不能按期离境的，可申请签证延期。

After about two Years an odd Circumstance presented it self which put the old Thought of making some Attempt for my Liberty, again in my Head: My Patron lying at Home longer than usual, without fitting out his Ship, which, as I heard, was for want of Money; he used constantly, once or twice a Week, sometimes oftner, if the Weather was fair, to take the Ship's Pinnace, and go Out into the Road a-fishing; and as he always took me and a young Maresco with him to row the Boat, we made him very merry, and I prov'd very dexterous in catching Fish; insomuch that sometimes he would send me with a Moor, one of his Kinsmen, and the Youth the Maresco, as they call'd him, to catch a Dish of Fish for him.

大约两年之后，出现了一个特殊的情况，这使我重新升起了争取自由的希望。这一次，我主人在家里呆的时间比以往长。据说是因为手头缺钱，他没有为自己的船配备出航所必需的设备。在这段时间里，他经常坐一只舢舨去港口外的开放锚地捕鱼；每星期至少一、两次，天气好的话，去的次数更多一些。那只舢舨是他大船上的一只小艇。每次出港捕鱼，他总让我和一个摩尔小孩替他摇船。我们两个小年轻颇能得他的欢心，而我捕鱼也确实有一手，因此，有时他就只叫我与他的一个摩尔族亲戚和那个摩尔小孩一起去替他打点鱼来吃；那个摩尔小孩名叫马列司科。

Small birds molt once or twice a year, and they replace their 9 or 10 primary flight feathers a few at a time over the course of a few weeks.

形体小的鸟儿一年脱羽一到两次。它们有9到10只主要用于飞行的羽毛，鸟儿们一次更换几只，在几周的时间内它们就可以完成更换。

During 1977—78 and 1980 recent ichthyological investigations werecarried out in the northern part of Gansu Proviace,usually known asHexi Area,and a 1ot of fish specimens were Collected.In this area there ??are 3 orders,5 families,16 genera,and 25 species and subspecies ciesof fishes.

本文依据1977—78年和1980年两次考察采集和国内有关标本，概述了甘肃省河西地区的鱼类，描记了鰍科鱼类一新亚种和一待定种，给出了25种鱼类的分类检索表。

We are dealing with a historic situation that happens once or twice in a 100 years.

我们现在正面临的，是100年才发生一到两次的特殊情况。

Wild swans, seagulls, swallows and cuckoos are a few of the very many kinds of birds which fly thousands of miles, twice a year, to avoid cold.

野天鹅，海鸥，燕子和布谷鸟是许多种一年两次飞行数千里以避开寒冷的鸟类中的几种。

Wild swans, seagulls, swallows and cuckoos are a few of the very many kinds of birds which fly thousands of miles, twice a year, to avoid cold.

燕子和布谷鸟是许多种一年两次飞行数千里以避开寒冷的鸟类中的几种。

Also yields a leather purse,金簪Song coins, pieces of clothing and other funerary objects. 2001 and 2002 two archaeological excavations, but also in the dressing floor, and cleaning up the graves discovered around 24, two construction sites, unearthed a large number of great research value of the funerary objects and artifacts specimens.

还出土了皮制钱袋、金簪、宋代铜钱、衣服残片等一批随葬品。2001年和2002年两次考古发掘，又在梳妆楼四围发掘并清理墓葬24座，建筑遗址两处，出土了一大批极有研究价值的随葬品和文物标本。

This year is also a lesson for Chinese people to learn what " economy " is . Some people calculated that in a person's life , they will experience an averaeg of two financial meltdowns .

今年，也是中国人对&经济&这个词理解更为深刻的一年，有人统计过，人在一辈子当中平均会遇到一到两次大的金融危机，2008年我们遇上了，这一年，我们离&经济&两个字如此之近，原来它一直在不知不觉地影响着我们的生活。

In 1998, there were 300 airconditioner manufacturers with a combined capacity of 10 million units, twice the market demand for that year.

1998年，共有300冷气机制造商组合在一起的存储容量为1000万个单位，两次的市场需求，这一年。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。