I tried very hard to restrain my laugher,but tears started flowing down my cheeks and I began guffawing.

参考译文：我尽力抑制我的笑声，但是眼泪从我的脸颊上流下来，我开始咯咯地笑起来。a.proffering 提供；拿出；递给 提出

b.defrauding 诈骗，欺骗;诈取，骗取; 

c.guffawing  哈哈大笑；狂笑 

d.deflecing 使歪斜; 使弯曲; 偏转，偏离;