underside

noun

1. 下侧；底面；底部；下表面
   the side or surface of sth that is underneath

1. N-COUNT 底面；下面；下侧
   The underside of something is the part of it which normally faces towards the ground.
   1. ...the underside of the car.
      车的底部
   2. ...the underside of the eyelid.
      眼睑内侧

1. A roll of fat jiggled on the underside of her arm.
   她胳膊下侧有一层肥肉一颤一颤的。
2. The saw had gone across gross's left rib cage through the underside of his liver.
   锯子锯进格罗斯的左胸腔，通过肝脏下方。
3. They painted the underside of their planes with a black varnish.
   他们在飞机的底部涂上了一层黑漆。
4. Starting from the underside of the branch, saw upwards until you have cut halfway through the branch.
   从树枝的下侧开始向上锯，直到切到一半的位置。
5. The underside of the rock was covered with seaweed.
   岩石下面布满了海藻。
6. The abaxial surface of a leaf is the underside or side facing away from the stem.
   叶子的远轴表面就是背离叶梗底部或旁边的部位。
7. The lid lifted up and on its underside all its occupants left their mark.
   掀开桌子的顶盖，盖子底面全是各个使用者留下的记号。
8. My car is badly rusted on the underside.
   我的车底部锈迹斑斑。
9. Affected areas include the underside, the face, the feet, and the ears.
   受影响的区域包括腹部、面部、足部和耳朵。
10. Chain tensioner sitting on underside of the crankcase.
    位于曲轴箱底面的链条张紧器。
11. Its underside is naked except for a few sparse hairs.
    除了几根稀疏的毛外，它的下侧是光秃秃的。
12. Down the underside runs a long tray to stow timbers used for supporting wide plant on the retractable outriggers.
    我的翻译：沿车身底面的是长的托盘，以承载支架，而支架则用于将宽设备支撑在可伸缩支腿上。
13. Flatten each leaf and fold lengthwise so that the underside of the leaf is folded inside and main leaf vein forms the top ridge of the fold.
    纵向拼合每个叶和褶皱，叶底面内折叠和主叶脉形成顶部的褶皱脊。
14. Within moments they had located a hole two meters in width on the steamer's underside.
    一会儿，他知道船底有一个长两米的大洞。
15. As distinct from the underside or wire side.
    有别于底面或网面。
16. He connected metallic wires to the back and the underside of an electrical fish. used of armor; having overlapping metal splates attached to a leather backing.
    他在电鱼的背面和底面联上金属线。用来指装甲；有附在皮革衬背上的搭接金属铠甲。
17. Install the screw attaching the front of the end cap to the underside of the quarter panel.
    安装连接末端端盖前侧到部分板底侧的螺丝。
18. The workpiece is located from two of the four holes in its base, and from the underside of the base.
    此工件采用其基座上四孔中的两孔和基座的底面定位。
19. He rolled up his shirt-sleeve and compared the white underside if the arm with his face.
    他卷起袖子把胳膊白色的内侧和脸作比较。
20. A coating of a tar or rubber-based material on the underside of a motor vehicle to retard corrosion.
    机动车辆底部为防腐蚀而涂上的一层柏油或橡胶材料。
21. He turned the rifle over and examined the underside.
    他把步枪翻过来；检查其背面。
22. Unscrew the oxygen sensor on the underside of the vehicle.
    旋开车辆底面上的氧传感器。
23. A taper has two sides, the underside is a circle, the flank is a camber.
    结论：圆锥有两个面，底面是一个圆形，侧面是一个曲面。
24. As you exhale, have your partner pull on your arm and push into your hip crease, stretching the underside of your torso.
    呼气的时候，你的同伴拉你的手臂向上，推髋的折处向中间，伸展你上身的下侧。
25. Butterfly with silver spots on the underside of the hind wings.
    后翅下边有银色斑点的蝴蝶。
26. The underside of this inchworm measures your baby up to24 inches.
    这尺蠖的底面措施宝宝高达24英寸。
27. Well done! This is called point. This circle is called underside.
    师：很好，这个点叫做顶点。这个圆叫做底面。
28. Affix adhesive tape to the underside of the adapters.
    将胶带固定到转换接口的底面。
29. These are locked into place by wooden battens, which are fitted to the underside of the boards.
    这些都是锁定到位的木板条，这是安装在底部的电路板。
30. The annular flange closely contacts the upper surface or underside of the table.
    凸缘为环形结构，凸缘贴合在桌子上表面或者下底面。

noun

1. the lower side of anything

   Synonym:    bottomundersurface