这辆SUV安装了黑色壁式拖钩，可以更安全地拖拽房车。

The SUV is fitted with a ___blackwall hitch to tow the RV more safely.

许多著名的铁壳船都是在布莱克沃尔船厂建造的。

Many famous iron-hulled ships were constructed at the ___Blackwall shipyard.