「由淺入深」

(pos:語句)
<explanation>
yue:逐步加深或發展，由表面到深入
eng:to gradually deepen or develop, from surface level to deeper understanding
<eg>
yue:課程由淺入深，適合初學者報讀。 (fo3 cing4 jau4 cin2 jap6 sam1, sik1 hap6 co1 hok6 ze2 bou3 duk6.)
eng:The course starts at a basic level and gradually becomes more advanced, making it suitable for beginners to enroll.