Despite the promising future, Lin said the C919's entry to the market won't occur soon. The date it goes into operation is expected to be between 2020 and 2022.

The debut flight is set to take place at Shanghai Pudong International Airport, subject to weather conditions, the C919's Shanghai-based manufacturer, Commercial Aircraft Corp of China, said on Wednesday.

中国商飞公司（C919飞机制造商，总部位于上海）周三称，飞机首飞地点定于上海浦东国际机场，但不排除受天气条件影响顺延。

The C919 aircraft will conduct tests concerning the passenger cabin, lighting and external noises.

C919飞机将进行有关客舱、照明和外部噪音的测试。

China's first domestically produced single-aisle passenger jet, the C919, is expected to take to the sky for its maiden flight on Friday, as the country endeavors to meet soaring domestic travel demand and break the global market duopoly of Boeing Co and Airbus Group SE.

在国内旅游需求不断上升急需满足，以及波音公司和空中客车集团垄断全球航空市场的环境下，中国首架自主生产的单通道喷气式飞机C919预计在本周五进行首飞。

The C919 is scheduled to make its first test flight in 2014 and first delivery by 2016.

根据计划，c919将在2014年首次试飞，在2016年首次交付。

It's reported that a C919 costs around 50 million dollars, less than half of a Boeing 737 or an Airbus A320.

据报道，一架C919成本为5000万美元，不到波音737或空客A320成本的一半。

' They haven't got that much local input,'he said, describing the C919 as an assembly of existing technology and a'glorified'A320.

奥莱利说，他们还没有得到太多的本土投入。他说C919是利用现有技术装配而成，而且是“美化”的A320。

Comac is developing the ARJ21, a small regional jet, and the larger single-aisle C919.

中国商用飞机公司（Comac，中国商飞）正在开发小型支线客机ARJ21和更大的单通道客机C919。

C919's developer, the Commercial Aircraft Corporation of China, is expected to launch a test flight of the aircraft in the first half of this year.

C919由中国商飞开发，该公司预计将于今年上半年进行C919的试飞。

After delays blamed on manufacturing problems, the C919 is due tofly this year and enter service in about 2019.

由于制造问题，C919预计在今年试飞，2019投入民用服务。

However, international industry executives attending the Zhuhai airshow in southern China expressed doubts about the significance of the C919 orders.

然而，出席珠海航展的国际业界高管却对c919订单的意义表示怀疑。

The witness swore to give an authentic testimony.

证人宣誓会说真实的证词。

He thoguht he would win because of an authentic testimony.

因为一份可靠的证词，他认为他会赢。

This article studies the principles of guaranteeing authentic statement, speed and humanistic solicitude in adducing proof of juvenile testimonial evidence in the perspective of minor victim and witness.

以未成年被害人、证人为切入点，研究了未成年人言词证据举证中的保障如实陈述原则、迅速原则、人文关怀原则。

True to me? An authentic statement from my heart?

对我而言是真实的？是发自内心的想法？

An authentic digital signature scheme useed to sign classical digital message was presented, it does not need an arbitrator to authenticate the signature unless some disputes had happened between the issuer and verifier.

提出了一个可信量子数字签名协议。对经典数字信息进行签名，一般情况下不需要第三方参与签名和认证，除非有争议发生。

An authentic signature; a bona fide manuscript; an unquestionable antique; photographs taken in a veritable bull ring.

可信的签名；真实的手稿；毫无疑问的古董；在真实的斗牛场拍摄的相片。

not counterfeit or copied Is that an authentic painting or a copy?

那幅画是原作还是复制品？

They managed to get the authentic painting by a famous painter off the wall.

他们设法将那幅著名画家的真迹从墙上弄了下来。

that an authentic painting from Picasso?

那幅油画是毕加索的真迹吗？

an authentic painting by Corot;

一幅真正的科伦特的画；