foothold
n
1 place where one's foot can be supported securely when climbing 立足处（攀登时脚踩的地方）.
2 secure position in a business, profession, etc from which further progress may be made （在事业等方面可以进一步发展的）稳固地位
gain a firm foothold in the industry 在这一企业中取得稳固地位.