You should eat good sustaining food , ie food that gives strength.你应该吃些能增强体力的食物.The chain reaction is self - sustaining.连锁反应是自持的.Kuznets also doubts the validity of the notion of'self - sustaining growth " initiated...
I stayed obstinately in my room, sitting by the telephone.我执意呆在房间里，坐在电话机旁边。Smith obstinately refused to carry out the order.史密斯我行我素，拒不执行命令。He obstinately asserted that he had done the right thing.他硬说他做得对....