precariously
adv. 不安全地；不牢靠地
例句
The economy is precariously close to recession.
经济濒于衰退的边缘。
《牛津词典》
The hotel perched precariously on a steep hillside.
旅店立在陡峭的山坡上状似摇摇欲坠。
He balanced the glass precariously on the arm of his chair.
他把杯子放在椅子的扶手上，随时可能摔下。
