with a high speed 还是at a high speed?China has developed -- such a high speed.

with a high speed 还是at a high speed?China has developed -- such a high speed. 速度快是at a high speed 还是at the high speed at high speed 还是at a high speed,教材上是前一种两者区别是什么? at high speed 和with great speed 有什么区别? 以更快的速度翻译成英文是at a higher speed 还是at high speed? High-speed ____ to break the 574.8km/hour speed record set by France, China has agreement with Thailand tobuild high-speed railways.A. Aiming B. To aim ____ to break the 574.8km/hour speed record set by France,China has agreement with Thailand tobuild high-speed railways.A.Aiming B.To aim at high/fast speedat high speed or at fast speed,要不要加a with a high high-speed Internet high speed data card what a high speed he is runing at China’s train sets world speed record A new high-speed train from Shanghai to Hangzhou speed不是不可数嘛,那么at a high speed 又怎么说呢、、、 是 a internet connecting speed 还是a internetonnection speed是 a internet connecting speed 还是a internet connection speed？ 英文高手进at very high speed还是at very high speeds Could you tell me _____- Certanily.In half an hour.A.when will the high speed train arriveB.when the high speed train will arriveC.when would the high speed train arriveD.when the high speed train would arrive