复数： undersides

Then they attached a gps tracking device to the vehicle 's underside .

然后他们将gps跟踪设备绑在这辆汽车的下面。

The last two screws to remove is the one at the underside of the base .

最后两颗螺丝要从底座下面一则取下。

He and other team members will drill through the ice to measure the underside of the ice and the ocean and currents beneath it .

他和他的组员会将冰层钻穿以便测量其下表面和其下面的海水、洋流。

Ikea said customers who had bought the chair , which retails for 10.99 in the uk , should check the model number on the underside of the seat .

宜家表示购买了这种在英零售价为10.99英镑的椅子的客户应核对座椅下面的型号。

Heat from the sun will raise the temperature of the air and the soil as the air becomes saturated , water condenses on the underside of the plastic and runs down into the container .

来自太阳的热量会使空气和土壤的温度升高，随着空气饱和，塑料布底部的水冷凝，流入下面的容器中。