高中英语常用词组 on earth


释义：

on earth 究竟，到底


例句：

A Christmas wreath exclaiming PEACE ON EARTH hangs on the restaurant door.

一个写着“世界和平”的圣诞花环悬挂在饭店的门上。



I can understand why astronauts find it difficult to readjust to life on earth.

我能明白为什么宇航员们发现难以重新适应地球上的生活。



Life on Earth will become unsustainable unless population growth is held in check.

地球上的生命将无法延续，除非人口增长得到控制。



Scientists have described the Aral sea as the site of the worst ecological disaster on earth.

科学家们把咸海描绘成地球上生态环境最差的地方。



What on earth are you doing?

你究竟在干什么？



What on earth will he get up to next?

他下一步究竟要干什么？



Where on earth did you spring from?

你究竟是从哪儿冒出来的？



"How on earth did she get it?"—"I dunno."

“她究竟是如何弄到它的？”—“我不知道。”