volatility of seaborne trade flows海运贸易: seaborne trade流向: flow direction不: a block of wood方向不稳定性: directional instability航向不稳定性: course instability; directional instability下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:海运贸易流向不稳定性，即可在微信中查询翻译
