take sb at his word= believe exactly what sb.says or promises,without question 完全相信某人的话或承诺而毫不怀疑
所以take each other at their word就是"互相深信不疑"的意思
take sb at his word= believe exactly what sb.says or promises,without question 完全相信某人的话或承诺而毫不怀疑
所以take each other at their word就是"互相深信不疑"的意思