例句與造句

1. Even in the initial experiments now being carried out with a simple, inexpensive telescope only 4 1 / 2 inches in diameter connected to the new high-precision delay line, Hajian and Nordgren say their instrument would be sensitive enough to detect a planet as big as Jupiter if one were orbiting their target star _ the red-giant Betelgeuse, in the constellation Orion, 310 light years away.
2. It's difficult to find precision delay line in a sentence. 用precision delay line造句挺難的