It was difficult to maintain a secure foothold on the ice.
在冰上不容易站稳脚。
Mathematical knowledge was certain and offered a secure foothold in a morass.
数学知识是确定无疑的，它给人们在沼泽地上提供了一个稳妥的立足点。
It may be many years before the new company can gain a secure foothold in the market.
也许要经过若干年这家新公司才能在市场上取得稳固的立足点。
He found a secure foothold and pulled himself up.
他找到了一个稳固的踏脚处并爬了上去。
He found a secure foothold and pulled himself up.
他找到了一个稳固的踏脚处并爬了上去。
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