if 在这里表示“只要”的意思
“Are they dead?” Royce asked softly.“What proof have we?”
“Will saw them,” Gared said.“If he says they are dead,that’s proof enough for me.”
“它们是死的吗?”罗伊斯轻声问道.“我们有什么证据吗?”
“得锯开它们,”贾雷德说道,“只要他说他们是死的,那就是证据,对我而言这足够了.”
that=he says they are dead
【they 更准确的意思,需根据上下文判定.】