gcc -o main main.c what is the meaning of each vocabulary of

gcc main.c -o main.o 请问,在C里面, what's the meaning of these vocabulary what are the main sources of english vocabulary 需200字解答 _______to the main idea of each paragraph. What's the main idea of Psrsgraph 2 and 3 What's the meaning what are the main achievement of O’Henry? 英语翻译What is the main idea of the memorandum What is the main idea of the movie What is the main characteristic of the hydraulic fluid tube? What is the main propuse of the battle in Somme? what is the main of the passage是什么意思? what is the main idea of the whole