diurnal course 的近义词 15 个

• daylight
• daytime
• light
• sunlight
• sunshine
• astronomical day
• bright
• dawn-to-dark
• early bright
• light of day
• mean solar day
• nautical day
• sidereal day
• sunrise-to-sunset
• working day

diurnal course 的反义词 3 个

• darkness
• night
• evening