By the 1990's, less than half of the earth's original rain forests remained, and they continued to disappear at an alarming rate every year.(到20世紀(jì)90年代，地球上原有的雨林只剩下不到一半，而且它們每年都繼續(xù)以驚人的速度消失。)

There was no time to launch the lifeboats because the ferry capsized with such alarming speed.(因?yàn)槎纱瑑A斜的速度如此之快，根本沒有時(shí)間把救生艇放下水。)

The situation was alarming.(當(dāng)時(shí)處境危急。)

We've gone over where coral reefs are usually formed—along the edges of shallow ocean banks in tropical or subtropical regions, and the fact that they are declining at an alarming rate.(我們已經(jīng)對珊瑚礁通常是在哪里形成的問題進(jìn)行了討論，它們是在熱帶或亞熱帶地區(qū)沿著淺海海岸的邊緣形成的，而它們的數(shù)量正在以驚人的速度減少。)

By 1965, when the drought situation turned alarming, the Government took the lead and allowed wheat revolution to move forward.(到了1965年，當(dāng)干旱形勢變得令人擔(dān)憂時(shí)，政府帶頭使小麥革命向前推進(jìn)。)

The fact that there is an iced coffee on the market with over a quarter of a woman's daily calories allowance is alarming.(市場上有一種冰咖啡，其熱量超過女性每日卡路里攝入量的四分之一，這一事實(shí)令人擔(dān)憂。)

Even using a "hands-free" device can divert a driver's attention to an alarming extent.(即使使用“免提”設(shè)備，也會(huì)在令人擔(dān)憂的程度上轉(zhuǎn)移司機(jī)的注意力。)

Peter's hair stood up on end at this alarming thought.(一想到這個(gè)可怕的念頭，彼得嚇得頭發(fā)都豎了起來。)

The rainforests are disappearing at an alarming rate.(雨林正以驚人的速度消失。)

The disease is spreading with alarming rapidity.(這種疾病正在以令人吃驚的速度蔓延。)