翻译莫尔斯码，这个Sketch包含一个自动并且不断重复调用函数flashSequence的loop函数，而flashSequence又在不断调用另外一个函数flashDotOrDash，flashDotOrDash又在调用由arduino提供的函数digitalWright和delay。(The translation of the Morse code, the Sketch contains an automatic and repeated call function of flashSequence loop function, and flashSequence continued to call another function flashDotOrDash, flashDotOrDash and Arduino provided by digitalWright and delay in the function call.)