1. 'He's' may be a contraction of 'he is' or 'he has'. he's可以是he is或he has的缩约形式。
2. The sudden contraction of the markets left them with a lot of unwanted stock. 股票市场骤然收缩，让他们剩下了许多无人要的股票。
3. The most common type of headache is a tension or muscle contraction. 最常见的头痛类型是紧张或肌肉收缩。
4. The contraction of facial muscles both influences the internal emotional state and reflects it. 面部肌肉的收缩既能影响人的内心情绪，又能将它反映出来。
5. Contraction of front and side parts as cells die off was observed in some subjects in their thirties, but it was still not evident in some sixty and seventy-year-olds. 随着细胞的死亡，有些人大脑前部和侧部的收缩，在三十多岁时就能观察到，但是也有些人直到六七十岁依然不明显。
