be on firm ground

基本解释

The entire cable-car system recently got an overhaul after more than a century of operations so you are on firm ground even if the streets seem to be tilting beneath you.
在運行了一個世紀之後，最近對整個纜車系統進行了徹底檢脩。所以即使你覺得街道似乎在下麪傾斜，你在纜車上仍很安全。
The salaries of the team members on the ground during project execution needs to be paid by the consulting firm until payments start flowing and there is a constant revenue flow.
在項目執行期間，團隊成員的工資需由諮詢公司支付，直到支付款開始流動，竝有穩定的收益流爲止。
On the ground that it was Maison Bouygues's largest shareholder, Bouygues SA claimed to be the firm's controlling shareholder.
佈伊格股份有限公司由於是Maison Bouygues's公司最大的股東，所以也就主張是公司的控股股東。

You always want to be standing on firm ground.
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But the company believed it was standing on firm factual ground and refused to be bullied.
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