掌: Ⅰ名词1.(手掌) palm 短语和例子摩拳擦掌 rub one's fists and wipe one's palms2.(动物的脚掌) the bottom of certain animals' feet; pad 短语和例子熊掌 bear's paw; 鸭掌 duck's foot; 狗掌 dog's pad3.(人的脚掌) sole (of a human fo
保持: (维持; 使不消失或减弱) keep; hold; retain; maintain; preserve 短语和例子保持安静 keep quiet; 保持优势 hold on to a dominant [favorable] position; 保持警惕 maintain vigilance; be on the alert; 保持清洁 keep clean; 保持优良传
