riding on its air cushion over a single rail, which it never touches,at speeds up to 300 m.p.h.----the possibilities appear unlimited.
靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。气垫船的前途是不可限量的。
新概念英语第四册
Lesson 29 The hovercraft
📚 句中词汇解析
从本句中提取的重要词汇
n. （隔离两个表面的）垫;垫子;起保护（或缓冲）作用的事物;（台球等运动）（台球桌内侧边缘的）弹性衬里;
vt. 使免遭损害;使免受令人不快的影响;（用垫子）使柔和;（跌倒或碰撞时）起缓冲作用;
💡 cush垫，缓冲+ion物 →靠垫
"She sat there, reclined against a foam rubber cushion."
她在那儿倚靠着海绵橡胶垫坐着.
近义：pad, pillow, quilt, stuff, absorb, muffle
vi. 出现，显现;出庭，出场;演出;发表;
💡 ap一再+pear看见→出现，显露
"She didn't appear at all surprised at the news."
她听到这消息时一点也没有显得吃惊。
近义：arise, materialize, surface, emerge, look, seem
反义：vanish, evanesce, evanish, fade
adj. 无限的;无数的;过多的，过度的;无条件的;
💡 un不，没有+limit限制+ed形容词后缀→无限的
"The ticket gives you unlimited travel for seven days."
凭本车票在七日内可自由乘车不受限制。
近义：illimitable, immeasurable, infinite, limitless, spaceless, termless
反义：qualified, restricted, circumscribed, circumscript, confined, constricted
riding
[['raidiŋ]]
n. 骑, 乘车, 乘, 骑术, 骑马
近义：horsemanship, equestrianism, equestrianship, equitation, ride, anchorage
prep. （表示方向）越过;（部份或全部覆盖）在…上面;由于;（表示论及）关于;
adv. 结束;再;（倒）下;从一边至另一边;
adj. 过去的;外面的;在上的;上级的;
n. 额外;剩余;剩余（或多余）的量;剩余物;
int. [电信学]报文完，请回复！;
vt. 走过，跳过;[美国方言]从…恢复过来;
"The government did an about-turn over nuclear energy."
政府对核能的态度来了个180度的大转变。
近义：above, on, up, regarding, relating, respecting
反义：under, below, beneath