英语翻译吸烟：食指与中指微微分开放在嘴前,吸气加呼气表示吸烟的动作.掩口：用手捂着嘴打呵欠或嘴张开用手指拍拍嘴唇,表示“枯燥无味”、“发困”或“该走了”.胸前划“十”字：

Question

英语翻译
吸烟：食指与中指微微分开放在嘴前,吸气加呼气 表示吸烟的动作.
掩口：用手捂着嘴打呵欠或嘴张开用手指拍拍嘴唇,表示“枯燥无味”、“发困”或“该走了”.
胸前划“十”字：天主教徒使用这一手势来为自己祝福,乞求上帝保佑或免除厄运.

Answer 1

你好, 我是美国MIT(麻省理工)的大学生, 很高兴能够帮助你! ryjily是机译的!
Smoking: use your index and middle finger to slightly open your moth, breathe in and then out -- this represents the action of smoking
Covering mouth: use your hand to cover up your mouth when you're yawning or use your fingers to tap your lips, this means you're bored, sleepy or wanting to leave.
Drawing a cross on chest: Catholics use this hand gesture to bless themselves, so God will protect them and ill fate will stay away.