99. It has been found that certain bats emit squeaks and by receiving the echoes, they can locate and steer clear of obstacles——or locate flying insects on which they feed. This echo-location in bats is often compared with radar, the principle of which is similar.
99.人們已經發現,某些蝙蝠發出尖叫聲並靠接受迴響來鎖定和避免障礙物——或者找到它們賴以為生的昆蟲。蝙蝠這種迴響定位法常拿來和原理與之很相近似的雷達相比。
certain
adj.
1.確鑿的,無疑的;可靠的
2.確信的,有把握的;一定會的[F][(+of/about)][+(that)][+wh-][+to-v]
3.某,一位姓……的(人)[B]
4.某種(或一定)程度的[B]
pron.
1.某幾個;某些[(+of)]
squeak
vi.
1.吱吱叫;嘎吱嘎吱響
2.【口】勉強通過;僥倖成功;險勝[(+by/through)]
3.【口】告密;背叛
vt.
1.使發吱吱聲
2.以短促尖聲發出(或說出)[(+out)]
n. [C]
1.吱吱聲;嘎吱嘎吱聲
2.【口】僥倖通過(或逃脫)
3.【美】【俚】助手
receive
vt.
1.收到,接到
2.得到,受到,遭受
3.接待,歡迎;接受,接納;承認
4.(無線電,電視)接收
5.容納
6.收買(贓物)
7.接球
vi.
1.收到;得到;接收
2.會客,接待
3.接發球
locate
vt.
1.確定……的地點(或範圍)
2.把……設置在[O]
3.使……座落於[H]
4.探出,找出
vi.
1.【美】【口】定居[Q]
steer
vt.
1.掌(船)舵,駕駛[O]
2.指導;帶領;操縱[O]
3.沿著……前進,遵循
vi.
1.駕駛,掌舵[Q]
2.行駛,行進
3.被駕駛,駕駛起來[Q]
n. [C]
1.指點,建議
obstacle
n.
1.障礙(物);妨礙[C][(+to)]
compared
adj.
1.比較的;對照的
2.compare的動詞過去式、過去分詞
principle
n.
1.原則;原理[C]
2.主義;信條[C]
3.(機器等的)原理;構造;工作方式[C]
4.道義,節操[U]
5.起源,本源
100. As the time and cost of making a clip drop to a few days and a few hundred dollars, engineers may soon be free to let their imaginations soar without being penalized by expensive failure.
100.隨著芯片製造時間和費用降低到了幾天和幾百美元,工程師們可能很快可以任他們的想像馳騁而不會被昂貴的失敗所懲罰。
imagination
n.
1.想像力;創造力[C][U]
2.空想;妄想;幻想[C]
3.想像出來的東西,幻想物[U]
penalize
vt.
1.【律】對……處刑;規定……應處刑
2.使不利;對……不公平
3.(競賽中)處罰(犯規者)
expensive
adj.
1.高價的;昂貴的;花錢的[+to-v]
failure
n.
1.失敗[U][(+in)]
2.失敗者;不及格者;失敗的嘗試(或經驗)[C]
3.疏忽;不履行,沒做到[U][C][(+in)][+to-v]
4.缺乏,不足[U][C]
5.衰退;故障[U][C]
6.破產,無支付能力[C][U]
7.【美】不及格[U][(+in)]
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