The first manned day and night flight of a solar-powered aircraft has been postponed due to technical problems.

由于技术问题，第一架可实现载人昼夜飞行的太阳能飞机推迟首航。

youdao

Mr. Borschberg wants Solar Impulse to become the first solar airplane to fly day and night, for 36 hours non-stop, without fuel.

Borschberg希望”太阳动力号“能成为第一架不使用染有，却可以昼夜飞行36小时不间断的太阳能动力飞机。

youdao

In the solar calendar, May the first is International Labor Day.

阳历五月一日是国际劳动节。

youdao

At the end of the day, the key difference between First Solar and SunPower the two largest U.S. solar panel makers is the cost structure.

FORBES: Solar Stocks That May Not Survive to 2014

First Solar, SunPower, and Evergreen Solar, all ended the day with modest gains of 1.4%, 1.1%, and 1.4%.

FORBES: Magazine Article

Its creators said the trip is the first attempt by a solar airplane capable of flying day and night without fuel to fly across America.

NPR: Solar Plane Leaves Calif. On Cross-Country Trip