拟声词的能指和所指之间的关系并不是完全任意的。

For onomatopoeic words, there does exist a certain connection between the signifier and the corresponding signified.

youdao

Eclipse完全可定制，您可以将视图移到您希望的任意位置。

Eclipse is completely customizable, and you can move views around anywhere you want.

youdao

对于任意完全包含在圆环面上的曲面，这个曲线都不是它的边界。

See, this one also does not bound anything that's completely contained in the torus.

youdao

You've got to realize that in calculus, the symbols that you call x and y are completely arbitrary.

你应该明白在微积分中,选x还是y当符号是完全任意的

耶鲁公开课 - 基础物理课程节选