Raven on a wire. A gloomy portent, precariously perched.

电线上的乌鸦 似不祥之兆 不安地栖息在上。

A bracelet was precariously placed on the rim of a well.

一只手镯很悬地搁在井边。

Ember finally made it into the chair, but she wobbled precariously.

小焰终于坐上了椅子，尽管有些摇晃。

Hermione was dozing in it, her drink tipping precariously in her hand.

赫敏坐在椅子里打瞌睡，手里的酒杯歪向一边，眼看就要洒出来了。

The others were fearless, leaping over the rocks, perching precariously on the edges.

别的人就大胆多了，他们纵身跳过一块块礁石，准确地落在石头边上。

The South China tiger is precariously close to disappearing, with only 20 to 30 still alive.

华南虎也处于濒临灭绝的边缘，现在只有20到30只还活着。

However friendly the universe may be, it has left the conditions of human existence precariously balanced.

无论宇宙对人类多么友好，它已经使人类的生存条件处于不稳定的平衡状态中。

Three hundred yards away he stopped where a huge dead tree leaned precariously on a smaller, living one.

他走了三百码后便停住了脚，附近有一棵巨大的枯树很不牢固地靠在一棵较小的活树上。

" RUN! " Harry yelled, and the shelves swayed precariously and more glass spheres began to fall from above.

“快跑！”哈利高喊，架子摇摇欲坠，更多的玻璃球开始从上面掉下来。

At least two others hang precariously from the bridge.

至少还有两人摇摇欲坠地吊在桥上。