两年一次的

One of the weaknesses of our military supply relationship with Isreal was that it camp up for renewal every year or two.

我们同以色列的武器关系中的一个弱点是每隔一两年就要延期一次。

Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.

利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度；对18年中植被生长季的开始、结束时间和长度进行一次线性拟合，分析了植被生长季的开始、结束日期和长度的线性变化趋势；基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度，并对这两种方法的监测结果作了比较，从而得到了较好的不同纬度区域1982～1999年植被生长季的变化趋势；基于曲线拟合了1982～1999年的不同空间位置的植被物候期，然后讨论了每年和多年平均的植被生长季的空间分异规律；最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系，不同纬度带的植被物候期与气候变化的相互关系，植被物候期与气候变化空间相互关系。

I have a routine medical check-up done every two years.

我每两年做一次例行性的健康检查。

In 2003, when Tiffani Bright broke her arm in two places during a stunt that went awry, the 15-year-old Oregonian and her parents' immediate concern was how to get her back cheering as quickly as possible.

在2003年，当Tiffani Bright在一次特技表演出错后一只手臂两处折断后，这位15岁来自俄勒冈州的女孩及她的父母立刻担心的是如何让她尽早回到啦啦队中。

This tube will last you a whole year because all you need is one pellet each time you use it on both eyes.

这个管道将最后你整整一年，因为所有你需要的是一个球每一次使用它的两只眼睛。

I wish we could turn the clock back two years and give the marriage another chance.

我但愿时光能倒退两年，再给我们的婚姻一次机会。

I wish we could turn the clock back two years and give the marriage an another chance.

我但愿时光能倒退两年，再给我们的婚姻一次机会。

At the same time, the New York State Department of Health aired a separate, simultaneous statewide television-based antitobacco media campaign that also targeted New York City, with advertisements featuring graphic images of the effects of smoking and highlighting the effects of secondhand smoke on children. From January through December 2006, New York City adult smokers were exposed to nearly 11,000 GRPs as a result of both campaigns combined, equating to the average viewer in NYC seeing an advertisement approximately 110 times during the year.

同一时期，纽约州健康局则同步向全州收视户播出另一项反菸媒体运动，纽约市亦作为目标区域，它是以吸菸所造成之健康影响的图像，并强调二手菸对儿童的影响为内容的广告；2006年一整年，在两项运动总合的影响力下，纽约市成人瘾君子所接触到的反菸讯息有将近11，000 GRPs，相当於纽约市一般收视观众在一整年当中看同一则广告约110次。

During carolin's last year at schoo,the teachers went on strike for two months to protest against the size of their classes.

卡罗琳在校的最后一年期间，教师们举行了一次为期两周的罢工以抗议班级大小。

Singapore Tzu Chi volunteers have been caring for HIV/AIDS patients for more than a decade. A gathering is convened every two months for the patients to have the chance to encourage each other. Among them was an Indonesia woman who, upon her marriage, emigrated to Singapore. Suffering from HIV/AIDS, she was once in despair, but her contact with Tzu Chi also led her to finding an emotional outlet and a different life. Now the woman hopes to recontribute by becoming a member of the local recycling station.

新加坡慈济志工关怀爱滋病友已经持续十年了，每两个月更有一次心莲之约，让爱滋病友彼此鼓励、相互打气，其中有一位从印尼嫁到新加坡的外籍新娘，不幸罹患爱滋的她一度痛苦绝望，不过认识慈济人之后，她找到舒发情绪的出口，为自己开启不一样的人生，现在的她因为想要回馈，也成为环保站的一份子。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失