31.we have passed little bitter lake

我们船已通过了小苦湖。

33.drop anchor at great bitter lake for awaiting southbound convoy and report.

在大苦湖下锚等候南行船队并报告。

That combined with the Red Sea gradually receding away from what are now the Bitter Lakes caused the canal to fade into disuse.

加上红海逐渐远离死海，导致这条运河渐渐废弃了。

That locality lies a little above Suez in a sound that used to form a deep estuary when the Red Sea stretched as far as the Bitter Lakes.

这地方在苏伊士上面一点，在从前是很深的河口的海汉里面，因为当时红海的水面还一直伸到这些咸水湖中。