seasonal 发音为英式/ˈsiː.zən.əl/或美式/ˈsiː.zən.əl/，词源可追溯至名词 season（季节）的形容词化演变[6] [7] [9] 。
自然现象描述
“The area is subject to devastating seasonal winds.”（该地区常遭破坏性季风袭击。）[2]
“Seasonal vegetables are fresher and more nutritious.”（时令蔬菜更新鲜且富含营养。）[7]
社会经济应用
“Seasonal workers are hired to meet peak demand during holidays.”（为应对节假日高峰期需雇佣季节性工人。）[6]
“Unemployment figures show significant seasonal variations.”（失业率数据呈现显著季节性波动。）[3]
文化场景
“Seasonal decorations like Christmas lights enhance festival atmosphere.”（圣诞彩灯等季节性装饰增强了节日氛围。）[6]
“The town’s economy relies heavily on seasonal tourism.”（该城镇经济高度依赖季节性旅游业。）[8]
副词形式：seasonally（例：“Prices fluctuate seasonally in this market.”）[1][4]
名词形式：seasonality（例：“Economists analyze sales seasonality for market predictions.”）[4]
近义词：cyclical（周期性的）、periodic（定期的）[4]
反义词：year-round（全年性的）[4]
在语言学研究中，seasonal 被归类为B2级词汇，要求中级英语学习者掌握其基本用法。农业领域常用"seasonal farm work"指代播种、收割等周期性农事活动[7] [8] ，而商业领域则将"seasonal goods"（如冬季大衣、夏季泳装）作为供应链管理的重要概念[2] [4] [6] 。