他一上午都没说话心里一定很烦闷的英文

there must be something on his mind he's been so quiet the whole morning

• 他:    he
• 一:    one
• 上午:    morning
• 都:    capital
• 没:    sink; submerge
• 说话:    speak; talk; say
• 心里:    in the heart; at h ...
• 一定:    fixed; established ...
• 很:    very; quite; awful ...
• 烦闷:    vexed; worried