1. 浅; 浅薄, 肤浅 (名)：shallow 浅的, 肤浅的 (形) | shallowness 浅; 浅薄, 肤浅 (名) | shallows 浅水处, 浅滩 (名)

noun

1. lack of depth of knowledge or thought or feeling

Synonym: superficiality

2. the quality of lacking physical depth

e.g. take into account the shallowness at that end of the pool before you dive