【正文】
of us benefit from puters. beneficial adj. be beneficial to 4. carry out . They failed to carry out the plan for some reason. The scientists are carrying out an important experiment. carry on 5. for fun . He is learning to operate the puter for fun. Don’t let children play with fire for fun. make fun of sb. 6. point out 指出 point at 指向 7. the struggle against . They are determined to continued the struggle against all kinds of difficulties. struggle against / for . The girl was encouraged to strugg