The paint is a crucial  part of the weight and balance of the tail.

油漆是尾巴重量和平衡的关键部分。

Jessica saw the girl-child Chani helping Paul, saw her press a crysknife handle into his palm, saw him heft it, testing the weight and balance.

杰西卡看到小女孩查尼在帮助保罗，看到她把一把水晶刀柄按在他的手掌上， 看到他举起它， 测试重量和平衡。

Air New Zealand says it wants to weigh 10 thousand passengers during a month-long survey so pilots can better know the weight and balance of their planes before takeoff.

新西兰航空公司表示，希望在为期一个月的调查中为 1 万名乘客称重，以便飞行员在起飞前更好地了解飞机的重量和平衡。