depth

hidden depths

usually admirable but previously unnoticed qualities of a person

内秀

solo spots reveal hidden depths.

插演（或插播）的独奏（或独唱）小节目往往会显露出不为人知的内秀。

in depth

in great detail; comprehensively and thoroughly

详细地，全面地，深入地。 参见 in-depth

research students pursue a specific aspect of a subject in depth.

研究生对课题的某一特定方面进行深入研究。

out of one's depth

in water too deep to stand in

在深水区