n.[数]约束；局促，态度不自然；强制
constraints───n.[数]约束；限制；约束条件（constraint的复数形式）
constrain───vt.驱使；强迫；束缚
constrains───约束
unconstraint───n.无拘无束，自由自在
constrained───adj.不自然的；强迫的；过于受约束的，拘泥的；v.驱使；强迫（constrain的过去式和过去分词）
constrainer───约束器
constant───adj.不变的；恒定的；经常的；n.[数]常数；恒量；n.(Constant)人名；(德)康斯坦特
constrict───vt.压缩；束紧
construing───v.诠释（词、行为）；分析（文章、句子等的）语法；（尤指大声地）逐字翻译（construe的现在分词）
The boy felt constraint in her presence.───那男孩在她面前感到局促不安。
Journalists were given the freedom to visit, investigate, and report without constraint.───新闻记者被赋予在没有约束下参观、调查和报道的自由。
At last we could relax and talk without constraint.───我们终于可以放松下来，无拘无束地谈话了。
Due to the constraint that only one tag can be identified at a time slot in the system, many relevant researches have been proposed.───此技术受限于只能在同一时间内辨识出一个标签，因此许多相关研究被提出。
Among all the passengers on the boat there seemed a constraint, a quietness, as if common sensibilities were shared.───船上的乘客似乎有些压抑，静静地不做声，好像都抱有同样的情感。
They had chosen those limits so as not to alienate themselves from friends and family, and it had never felt like much of a constraint.───他们这么做，是为了不和朋友和家庭疏远，他们也没觉得这是什么限制。
In the boom years, it seemed the only constraint on growth for China's property developers was how much land they could acquire.───几年房地产飞速发展的时候，看来唯一制约了中国房地产开发商增长的是他们能拿到多少地。
The next time it feels like a time constraint is going to burden you to the ground, don't become obsessed with how little time you have.───感觉下一次，这样的强迫的想法就会把你压垮，不要被你有如此少的时间迷惑。
the point of application is the contact point between the body and the constraint.───作用点在物体与约束相接触的那一点。