例句與造句

1. To get points Q and T on these lines giving this shortest distance, projection 5 is drawn with hinge line H 4, 5 parallel to P 4 R 4, making both P 5 R 5 and S 5 U 5 true views ( any projection of an end view is a true view ).
2. It's difficult to find parallel to ps in a sentence. 用parallel to ps造句挺難的