shì / chǎng / chū / xiàn / kòng / quē / hòu / xǔ / duō / xīn / gōng / sī / chèn / xū / ér / rù

市场出现空缺后，许多新公司趁虚而入。

After a gap appeared in the market, many new companies moved in to take advantage of it.