一次

The incident, which has an international dimension because the gatecrashers were within feet of Indian Prime Minister Manmohan Singh and they shook hands with Obama, has already drawn a rare public apology from the Secret Service, and Messina reiterated they had been at fault.

这次事件同时也是一次国际事件，因为闯入者进入了印度总理 Manmohan Singh 前一尺范围里，他们还和奥巴马总统握了手，这次事件也引出了保秘局仅有的一次公开道歉，Messina 反复提到他们的失误。

He is embarking on a country tour that will last until the election, starting with a rally in Bulawayo, Zimbabwe's second city and capital of the deeply disgruntled Ndebele minority.

他正对农村进行一次视察，这一活动将以在Bulawayo的一次集会开始，并一直持续到大选开始。Bulawayo是津巴布韦第二大城市，也是对政府深深不满的恩德贝勒少数族群的首府。

He is embarking ona country tour that will last until the election, starting with a rallyin Bulawayo, Zimbabwe's second city and capital of the deeplydisgruntled Ndebele minority.

他正对农村进行一次视察，这一活动将以在Bulawayo的一次集会开始，并一直持续到大选开始。Bulawayo是津巴布韦第二大城市，也是对政府深深不满的恩德贝勒少数族群的首府。

Blatter's critics on the podiumhad been outmanoeuvred, again. One Argentine writer called it 'afestival of pandering'.

布拉特的批评者又一次在讲台上缴械投降，一位阿根廷作家把这次大会称作一次&曲奉迎合的节日&。

"If the UN Security Council does not apologise, we are going to conduct an intercontinental ballistic missile test and a nuclear test, as a self-defence measure," the foreign ministry said in a statement released by the official KCNA news agency.

朝鲜外务省通过官方的朝中社发布声明表示：&如果联合国安理会不道歉，我们将进行一次洲际弹道导弹试验和一次核试验，作为一种自卫措施。&

Write all your reasons for quitting on an index card and keep it near you at all times.

相反，一次只买一包，并且一次只带两三根在身上。

It has revolutionised one industry after another. Now Apple hopes to transform three at once

它一次又一次革命性地改变了一个产业，如今，苹果将再次引领一场革命性地变革。

After one year, your child should get a booster shot.

隔一年后，加强一次，入学前再加强一次。

Yet when the 1819-pound craft rocketed from Cape Canaveral on August 20, 1977, and pointed itself toward its place in history, the trip was one heartstopper after another.

然而，这艘一千八百十九磅的飞船在1977年8月22日对准自己在历史进程中的位置并从卡纳维拉尔角呼啸而上时，它的旅程一次又一次叫人提心吊胆。

I used to test the Alkalinity, Calcium, Nitrates, and pH at least every few days, mostly when I was dialing in the solution for my top off containers of Alk and calcium.

每隔一段时间，我就会测试KH，钙，NO2，NO3，PH，通常都是在我添加钙水和KH到大桶时才做，现在我每两周测一次，因为大体水体平衡了，3个月会换了一次活性炭

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。