Traffic was heavy and cars were closingup behind each other.
交通拥挤不堪，汽车一辆紧挨一辆地前行。
《牛津词典》
2
Don't use cold water as it shocks the blood vessels into closingup.
不要用冷水，因为冷水会刺激血管，使之闭合。
《柯林斯英汉双解大词典》
3
In a sign of just how volatile the markets are, the dow has reversed direction every day, closingup one day, then down the next, for the past seven sessions.