The only way to learn a new programming language is by writing programs in it.
体育教育应与其他学科一样成为学校课程的重要组成部分。
过去并非静止,它随着我们的理解而演变。
The future of natural gas lies in technology and efficiency.
The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.