/fɔɪl; fɔɪl/
n
1 [U] metal rolled or hammered into a very thin flexible sheet 箔
*tin, aluminium foil, ie such as is wrapped round bars of chocolate 锡纸、铝箔（如包装巧克力的）.
2 [C] person or thing that contrasts with, and so emphasizes, the qualities of another 陪衬; 衬托
*Her sparkling jewellery served as the perfect foil for her fine complexion. 她戴着闪闪生辉的首饰, 更显得容貌姣好.

/fɔɪl; fɔɪl/
v [Tn] prevent (sb) from carrying out a plan; prevent (a plan, etc) from succeeding; thwart; frustrate 阻止（某人）执行计画; 阻挠（计画等）; 挫败
*He was foiled in his attempt to deceive us/His attempt to deceive us was foiled. 他企图欺骗我们, 但没有得逞.

/fɔɪl; fɔɪl/
n long thin light sword with a protective button on the point, used in fencing (fence2) （击剑运动的）钝头剑. =>illus at fencing (fence) 见fencing插图. Cf 参看 epee, sabre.

The men's foil was one of ten fencing events on the fencing at the 1996 Summer Olympics programme. It was the twenty-second appearance of the event.