英语语法分析

For years, Mr. Pitman, the U.S. Marine ecologist, has searched the world's rivers and oceans for rare species of dolphins and whales.

多年以来，美国海洋生物学家Pitman足迹遍及世界各大河流和海洋，搜寻稀有的海豚和鲸鱼。

That respectively does the academic calculation and ADAMS simulation for steering trapezium and pitman arm mechanism, and optimizes the steering characteristics.

分别就转向梯形机构和转向摇臂机构进行了理论计算和ADAMS仿真，并对转向特性进行了优化。

Dr Pitman and his colleague Dr John Durban helped a BBC film crew capture their behaviour for the TV documentary series Frozen Planet, to be shown later this month.

皮特曼博士和他的同事，约翰？德班博士，帮助BBC拍摄的虎鲸捕食猎物的纪录片，冷冻星球，将在这个月的晚些时候上映。