1. 危险的：stake - 股份/股本 | precariously - 危险的 | bankruptcy - 破产

2. 不安全地：effortlessly 不费力地 | precariously 不安全地 | seriously 严肃地,认真地

3. 危险地,不稳固地：
13) perch 处于(高处) |
14) precariously 危险地,不稳固地 |
15) overbalance 失去平衡

4. 不确定地：precardium /心口/ | precariously /不确定地/ | precariousness /不确定/

adv

1. in a precarious manner

e.g. being a precariously dominant minority is a difficult position for human nature to cope with