precarious
/prɪˈkeərɪəs/adjective
1
- not securely held or in position; dangerously likely to fall or collapse不牢靠的, 不稳的; 易倒塌的：
a precarious ladder.
一个不牢靠的梯子。
2
- dependent on chance; uncertain碰机会的; 不确定的：
she made a precarious living by writing.
她靠写作过着饔飧不继的日子。
派生词
precariously
adverbprecariousness
noun词源
mid 17th cent.: from Latin precarius 'obtained by entreaty' （from prex, prec- 'prayer'）+-ous.