1N-VAR （飞机、飞船等的）商载，有酬载荷 The payload of an aircraft or spacecraft is the amount or weight of things or people that it is carrying. （飞机、飞船等的）商载，有酬载荷 [technical]
With these very large passenger payloads one question looms above all others — safety.
客载量这么大，有一个问题非常突出—安全。
2N-VAR （导弹等武器的）有效载荷，炸药量 The payload of a missile or similar weapon is the quantity of explosives it contains. （导弹等武器的）有效载荷，炸药量 [military]
...a hypervelocity gun capable of delivering substantial payloads to extreme ranges.