in short supply 供应不足
speak ill of 说…的坏话; speak well of 说…的好话
specialize in 专门研究, 专攻
in step 步伐一致; out of step 步伐不齐
stick sth. on 把…贴在…上
stick to 粘着, 坚持
subject…to(=cause…to experience)使受..到 subject (adj.) to 易受到…的
submit…to 提交
substitute…for 以…代替…
take a fancy to (=become fond of) 喜欢
yield to 对…屈服,投降,让步,顺从