extremely long and complicated and sometimes tricky to understand

gập ghềnh, phức tạp

a mental representation or vision of something frightening or haunting, often associated with fear, anxiety, or an unsettling memory

hồn ma, bóng ma

the range of different wavelengths or frequencies of light or radiation

spectrum, spectrum điện từ

the act of approaching each other from different places for the purpose of unifying

hội tụ, tiếp cận

(of roads, paths, lines, etc.) to lead toward a point that connects them

hội tụ, gặp nhau

(of human activities or natural forces) to gradually break down rocks, mountains, hills, etc.

giảm giá trị, xói mòn

the act of taking away someone's dignity, usually by reducing their rank

sự suy thoái, tình trạng bị hạ thấp

able to utilize language to convey something well, especially in a persuasive manner

hùng biện, lôi cuốn

a speaking style that involves controlling one's voice and having an accurate pronunciation

nói lưu loát

(of music) made to be sung by a group of singers, especially in church

hợp xướng, thuộc về hợp xướng

