在英国汽车靠左侧行驶。 In Britain cars are driven on the left.
主动脉系统血管的主干道，将血液由心脏左侧输送到除肺部以外的所有肢体及器官的动脉里 The main trunk of the systemic arteries, carrying blood from the left side of the heart to the arteries of all limbs and organs except the lungs.
在英国，车辆是靠路的左侧行驶而不是靠右侧行驶。 In Britain we drive on the leave side of the road, not the right side.
汽车碰撞时左侧的翼子板撞坏了。 The nearside wing was damaged in the collision.