萨拉走上前来，紧绷着脸，怒气冲冲。Sarah came forward with a tight and angry face.我的胳膊很累，背部肌肉紧绷得难受。My arms are tired, and my back is tense.你要是觉得两眼周围紧绷，就放松一下肌肉。If you feel a tenseness around the eyes, relax your muscles....
The doctor worked busily beneath the blinding lights of the delivery room.这位医生在产房刺目的灯光下忙碌着。The two saleswomen were busily trying to keep up with the demand.那两名女售货员正忙着接待顾客。A wind-up clock ticked busily from the kitchen co...
A resin derived from methacrylic acid.一种用于制树脂的二羧酸.Ethylene - propylene - diene rubber ( EPDM ) was filled with nano - CaCO 3 which was in - situ modified by methacrylic acid ( MAA ).使用甲基丙烯酸 ( MAA ) 原位改性纳米CaCO3填充三元乙丙橡胶 ( ...