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1·The contractions started coming every five minutes.

子宫开始每隔五分钟收缩一次。《牛津词典》

2·Movements of the rib cage for breathing are reduced during sleep, making the contractions of the diaphragm more important.

睡觉期间，胸腔所做的呼吸活动会减少，这使得横膈膜的收缩变得更加重要。

3·The contractions were getting stronger.

宫缩越来越强烈。《柯林斯英汉双解大词典》

4·The contractions were suddenly hard.

突然之间宫缩猛烈起来了。

5·I didn't feel like I was having contractions.

我没有感觉我有收缩。

6·Tell her it only hurts during the contractions.

告诉她只是在宫缩的时候才会痛。

7·Contractions came on hard and, oh, so frequently.

收缩来的很猛烈，并且很频繁。

8·The longest: 43 seconds with 25 consecutive contractions!

最长：43秒，连续收缩25次！

9·One thing relativity tells us about is length contractions.

相对论告诉我们的一件事是长度的收缩。

10·In the past two decades, it has been 100 months between contractions.

在过去的20年间，这个周期则为100个月。

(1)muscle contraction肌肉收缩；肌收缩

(1)economic contraction经济萎缩

(1)contraction ratio收缩比；收缩系数

(1)uterine contraction子宫收缩

(1)thermal contraction热收缩

(1)contraction stress收缩应力