用法:
1 vertical piece between two treads of a staircase 梯级竖板.

用法:
2 person who habitually gets up early or late in the morning (as specified) 惯於早起或晚起的人:
an early/a late riser 早起[晚起]的人.

• elegiac
• elegy
• element
• elemental
• elementary
• elephantine
• elevate
• elevation
• elf
• elicit
• elide
• eligible
• eliminate
• elite
• elitism
• elixir
• ellipse
• ellipsis
• elliptical
• elm
• elocution
• elongate
• elongation
• elope
• eloquence