the expansion and contraction of the metal金属的膨胀与收缩Contraction of the timbers left gaps in the fence.木料收缩,结果围墙露出缝来.The forces of expansion are balanced by forces of contraction.扩张力和收缩力相互平衡....
The combined contraction of the atria and ventricles is a heartbeat.心房和心室的这一系列动作合称为一次心跳.During inhalation, contraction of the intercostal muscles elevates the ribs.吸气时肋间肌收缩,提起肋骨.The surface electromyogram ( EMG ) and int...
The basket price of the seven OPEC crudes Monday fell to 27.Opec七个成员国,星期一提供的原油价格为27.98美元一桶.Analysts say It'shut in cheaper, heavier crudes in order to preserve profit margins.分析人士表示,它减少了价格较低的重质原油的生产,以保持利润率....
She was the belle of her Sunday School class.在主日学校她是她们班的班花。Most desolating were those evenings the belle - mere had envisaged for them.最最凄凉的要数 婆婆 给她们设计的夜晚.La plus belle qualit é de Pelletier , en fait , devenait parfois ...