它会毫无先兆的发生.It can happen without warning.偏头痛发作, 尤其是有先兆的偏头痛, 是主要的预测因素.The presence of migraine attacks, especially migraine with aura , was the major predictor for these associations.有先兆的偏头痛比无先兆偏头痛具有和精神障碍更强的相关性.The associa...
...the clang of lances striking armour.长矛撞击盔甲发出的咣咣声The iron gate was pulled to with a clang.铁门哗的一声拉上了.He pulled the gates to with a clang.他把大门咣当一声带上了。It gave a metallic clang, like a cracked bell.它发出了金属碰击般的哐啷声，跟破钟似的。...