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- Don't shrink from the thought of obstacle. 不要一想到困难就退缩。
- His figure looks very funny in the concave mirror. 他的样子在凹镜里显得非常可笑。
- Lack of education is an obstacle of success. 缺乏教育是成功的障碍。
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
- Concave obstacle 凹形障碍
- An obstacle or a span to be jumped. 需跳越的障碍或跨度
- Her father's opposition remained only their obstacle. 她父亲的反对是他们唯一的障碍。
- An obstacle to or a censoring of free speech. 言论限制对言论自由的审查或言论自由的障碍
- She has the determination to overcome all the obstacle to success. 她有决心克服通往成功路上的一切障碍。
- A sand trap serving as an obstacle on a golf course. 障碍，洞在高尔夫球比赛中用作障碍物的沙坑
- Her parents' opposition is an obstacle to her marriage. 她父母的反对是她结婚的障碍。
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- Not be able to pass his mathematics exam proved an obstacle to his career. 他数学考试不及格是他前途上的一大障碍。
- An obstacle, such as a sand trap, found on a golf course. 障碍地区如沙障等高尔夫球球道上的障碍物
- A concave molding with a cross section that approximates a quarter circle. 飞檐的凹圆线脚截面近于九十度弧的凹线脚
- A depression similar to that in a shallow concave container for food. 凹形，凹面与浅的凹型盛食物的容器相似的凹处
- This is the chief obstacle to world peace. 这是世界和平的主要障碍。
- The palm of one's hand is slightly concave. 人的手掌是微凹的。
- A concave surface, structure, or line. 凹面、凹形结构、或凹线
- We laid about us to surmount the obstacle. 我们努力克服障碍。
