They also can interfere with mental ability, make muscles weak and cause pain in the head.
他们还可能干扰心理能力，使肌肉软弱，导致头部疼痛。
No sooner thought upon than done. There I lay on my elbows, in the most trying attitude, and every now and again gave a weak stroke or two to turn her head to shore.
说干就干，我支起胳膊时躺在那里，用最别扭的姿势不时轻轻划上一两桨，使船头转向岸边。
No sooner thought upon than done. There I lay on my elbows, in the most trying attitude, and every now and again gave a weak stroke or two to turn her head to shore.
说干就干，我支起胳膊时躺在那里，用最别扭的姿势不时轻轻划上一两桨，使船头转向岸边。
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