arch
单词辨析：
指几何学中的弧，也指弧形或弧线。
an arc of 120
º120º的弧
The rainbow formed a beautiful arc in the sky.
虹在天空中形成了一个美丽的弧。
The sun appears to move in an arc across the sky.
看起来太阳在天空中的运行轨迹呈弧形。
指弧形结构的物体。
That arch has a span of 70 metres.
那个拱的跨度为70米。
She was going to visit the Triumphal Arch.
她打算去凯旋门游玩。
指弯曲的形状或呈弓形的物体。
The bow of his lips is very attractive.
他嘴唇的弧形曲线很迷人。
The child wanted to know why the rainbow is in a bow shape.
那个小孩想知道为什么虹为弓形。
含义最广，指任何带有弧度的线条或曲线状物。
The stairs ascended in a graceful curve.
楼梯呈优美的曲线上升。
There is a sharp curve in the road.
路上有个急转弯的地段。
指通过外力的作用使某物弯曲。
The worker bends a piece of wire into a ring.
那个工人把一根金属丝弯成一个圆圈。
That little boy wonders why copper bends easily.
那个小男孩想知道铜为什么容易弯折。
指身体某部位拱起或某物朝某方向拱起。
The lion arched its back to jump on the deer.
狮子拱起后背向鹿扑去。
Two rows of trees arched over the sidewalk.
树在人行道上方形成了一个拱顶。
指某物在外力的作用下发生弯曲；用于人时，常表示鞠躬或由于羞愧而低头。
The branches were bowed by the heavy snow.
树枝被大雪压弯了。
The trees bowed in the wind.
树木被风吹弯了腰。
She bowed deeply to her guest.
她向客人深深地鞠了一躬。
He bowed his head in shame.
他羞愧地低下了头。
强调卷绕或盘绕成环形。
The snake coiled around the tree.
蛇盘绕在树上。
He coiled the wire.
他把铁丝盘了起来。
指某物沿曲线运动或呈曲线形。
The road curved to the left.
马路弯向左边。
A smile curved his lips.
他咧嘴笑了。
相关例句：
The influence to stress of skew arch bridge was studied by changing the abutment torsional stiffness and width-span ratio.
通过改变桥台抗扭刚度和宽跨比，研究对斜交拱桥受力的影响。
Fault tree analysis is used to analyse the high arch dam risk.
利用故障树分析法对高拱坝进行风险分析。
A steel arch bridge connecting New Jersey and Staten Island at Bayonne, New Jersey.
新泽西州的Bayonne处有一座连接新泽西和Staten岛的钢拱桥。
The state of steel arch centering under construction loads is analyzed by the finite element software MIDAS.
利用有限元软件MIDAS，对钢拱架施工的受力状态进行了数值分析。
Traders in Marble Arch are facing huge rent increases.
大理石拱门的经销商们面临租金的大幅上涨。
He tapped the side of his nose in an uncharacteristically arch gesture.
他轻叩鼻侧，做了个不常见的调皮手势。