名詞 monsoon:

1. a seasonal wind in southern Asia; blows from the southwest (bringing rain) in summer and from the northeast in winter
2. rainy season in southern Asia when the southwestern monsoon blows, bringing heavy rains
3. any wind that changes direction with the seasons

1. Heavy rains occur during a summer monsoon.
   暴雨出現(xiàn)在一個夏季季風期
2. The ship beat back against a monsoon.
   船逆著季風艱難地行駛。

mon.soon

n.（名詞）
A wind system that influences large climatic regions and reverses direction seasonally.
季風：影響大面積地區(qū)的氣候并隨季節(jié)而改變風向的風

A wind from the southwest or south that brings heavy rainfall to southern Asia in the summer.
夏季季風：夏季從西南或南方吹來的并能給亞洲南部帶來大量降雨的風
The rain that accompanies this wind.
季風雨：隨風而來的雨

來源：
Obsolete Dutch monssoen
已廢荷蘭語 monssoen
from Portuguese monôôo
源自 葡萄牙語 monôôo
from Arabic mawsim [season]
源自 阿拉伯語 mawsim [季節(jié)]

【引伸】
monsoon.al
adj.（形容詞）