The traffic is very heavy.

• 交通拥挤

The traffic is very heavy.的用法和样例：

例句

1. Heavy traffic poses a problem in many old towns.
   交通拥挤是许多旧城镇的难题。
2. If we bypass the town we'll miss all traffic.
   我们绕城外走，就不会受交通拥挤之累了。