The smaller lake ranges from five to fourteen feet in depth.小一些的湖深度从5英尺到14英尺不等。We will discuss these three areas in depth.我们将深入探讨这3个领域。This is a new subject and needs to be explored in depth.这是个新课题,需要深入的研究....

in depth的音标：in depth的英式发音音标为：[in depθ]in depth的美式发音音标为：[ɪn dɛpθ]...

深入地，全面地...