forefront
n. 重要位置，最前沿；（思考、关注的）重心
例句
They have been at the forefront of the campaign for political change.
他们一直处于政治变革运动的前沿。
《柯林斯英汉双解大词典》
The pension issue was not at the forefront of his mind in the spring of 1985.
养老金问题在1985年春不是他思考的重心。
The new product took the company to the forefront of the computer software field.
该新产品使这家公司跻身计算机软件业的前列。
《牛津词典》
