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- They couldn't keep a straight face. 他们没法不笑出来。
- It was difficult to keep a straight face when he fell over the dog. 当他绊着狗摔了一跤时，大家很难扳着脸不笑。
- My father never dotes on any of us. What he gives us is always a straight face. 父亲谁也不宠爱。他给我们的总是一副严肃的面孔。
- She say with a straight face she see green spacemen in the back yard. 她面无表情地说她在后院看到绿色外星人。
- Tom kept a straight face while telling the joke. 汤姆说这一笑话时，丝毫不露声色。
- She said with a straight face she saw green spacemen in the back yard. 她面无表情地说她在後院看到绿色外星人。
- He kept a straight face and remained speechless. 他绷着脸不说话。
- USE THIS VALVE ONLY WITH FLAT FACE FLANGE AND FULL FACE GASKET. 这种阀门只能与平面法兰和全工作面垫圈配合使用。
- She said it with a straight face. 她板着脸说了这件事。
- He always keeps a straight face. 他总是不苟言笑。
- Carol: How do you do that with a straight face? 卡罗尔：你怎么可以板着脸说这些话呢？
- Judges love to keep a straight face. 法官喜欢保持一张正直的脸。
- I struggled to keep a straight face. 我竭力装出一副一本正经的样子。
- Before you try to conquer any of these you should be comfortable doing plain straight airs and be consistent in popping off the lip of the jump and remaining even in the air. 在你准备挑战这些新的特技之前，首先要保证基本的动作要做得到位，比如直跳，在空中保持平衡，从跳台起跳，着陆等。
- She put pink and green stripes in her hair and looked rather like a Neapolitan ice cream. I couldn't keep a straight face when she asked me what I thought about it. 她在头发上扎着粉红夹绿色的布条，看上去就像夹层花色冰砖当她问我象什么时，我禁不住笑了出来。
- The sight that met my eyes made it hard to keep a straight face. 映入眼帘的情景使我难以板起面孔。
- Few people can listen to this joke with a straight face. 很少有人听到这个笑话而不笑的。
- He sounded so foolish that I could hardly keep a straight face. 他说话听起来那样傻气，我简直忍不住笑。
- He has such a strange voice that it's difficult to keep a straight face when he's talking. 他的声音很古怪，说起话来很难让人不笑。
- It's hard to keep a straight face when someone tells a funny joke. 别人讲笑话时,很难板着脸不笑。
