A broad-leaved European willow (Salix caprea) having large catkins that appear before the leaves and tough wood used as a source of charcoal.是什么意思_A broad-leaved European willow (Salix caprea) having large catkins that appear before the leaves and tough wood used as a source of charcoal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句