例句 /

The most direct causes of falls were stumble, slip, no surefooted or no suresat and weakness in the leg.

The most direct causes of falls were stumble, slip, no surefooted or no suresat and weakness in the leg.

跌倒最常见的直接原因是绊倒、滑倒、踏空或坐空、腿发软。