Palpitation from frequent extrasystoles or other arrhythmia is common.来自频发的期前搏动或其他心律不齐的心悸亦属常见.This normal variation in rhythm is known as sinus arrhythmia.节律的这种正常变化称为窦性心律失常.The heart frequently exhibits ventricular arrhy...
他想用手的触觉容易分辨的模型来代替字母.Instead of letters, he wanted to use shapes that were easy to tell apart by touch.声音识别软件还能使它设计成使用时不须用手的款式.Voice - recognition software will let it be designed for hands - free use.这个组织目前提倡给突然虚脱的成年人使用仅...