不可预知的加勒比海—大西洋天气模式也起了一定的作用。
The unpredictable Caribbean-Atlantic weather pattern also plays its role.
这项研究结果再次肯定了普通感染和环境因素也起了一定的作用。
This research reinforces the idea that common infections and environmental factors also play a part.
巫术对于救荒本身并无实际意义，但对安慰民众，保持社会稳定起了一定的作用。
Sorcery itself was materially useless to the draught relief, but it acted positively in comforting the people and maintaining social stability.
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