He rubbed the back of his neck and smiled ruefully at me.他挠了挠脖梗儿，对我苦笑了一下。He grinned at her ruefully.他遗憾地对她咧嘴一笑。She practised her part ruefully, feeling that she was effectually shelved.她懊丧地排练着自己的角色, 觉得自己实际上是被闲置在一边....
Daily facial exercises help her to retain the skin's elasticity.每天做面部运动帮助她保持皮肤弹性。Gluten develops elasticity in a dough.麸质使生面团有韧劲。The skin eventually loses its elasticity.皮肤最终会失去弹性....
飞行员明智地决定尽快返回法恩伯勒。The pilot wisely decided to return to Farnborough post haste.卢克就坐在飞行员后面，并且和他说着话。Luke sat directly behind the pilot and conversed with him.飞行员报告机场控制塔他遇到了技术问题。The pilot told the control tower that he'...
光对植物的叶子发生作用从而产生叶绿素.Chlorophyll is produced by the action of light on the plants'leaves.这一病害使叶绿素遭到不同程度的破坏.The disease causes varying degrees of destruction of the chlorophyll.叶绿素的分子结构已经搞清, 它是由卟啉组成的.The structure of t...