But if you downhaul, then you are pulling down, specifically on a boat.
但是如果你向下拖, 那么你就是向下拉, 特别是在船上。
英语百科
Downhaul
The downhaul is a line which is part of the rigging on a sailboat; it applies downward force on a spar or sail. The most common downhaul on a modern sailboat is attached to the spinnaker pole, though this may be referred to as the foreguy in some rigging nomenclature. The term is also commonly applied to the cunningham on the mainsail.