Land and other resources should not constrain the development of biomass as a renewable energy source for the future . 土地和其它资源应该不妨碍作为未来可更新能源的生物量的发展。
Barrington was constrained to admit that all things considered it was right for newman to mind his own business . 巴林顿不得不承认,要是从各方面考虑一下,纽曼这种自扫门前雪的态度实在也无可非难。
This is not entirely frivolous; a strong magnetic field, for instance, can constrain electrons to move only along the field lines . 这不是完全无价值的,例如,强磁场可约束电子使之只能沿着场力线运动。
Our dilemma was that we were constrained by domestic pressures from choosing either of the two options that made strategic sense . 难办的是,囿于国内压力,我们无法在两个具有战略意义的方案中作出选择。
The aim was to stimulate exports so that the economy could expend without being constantly constrained by the current account deficit . 其宗旨是鼓励出口,使经济能得到发展,而不致常常受到往来帐户逆差的限制。