n. 名词弹弓；石弩；飞机弹射器；弹射座椅
vt. 及物动词用弩炮发射；用弹弓射；用弹射器发射；猛投
vi. 不及物动词用弹射器弹射；快速移动
The ancient soldiers used a catapult to breach the castle walls.
古代士兵用投石机攻破城墙。
He built a miniature catapult for his science project at school.
他为学校的科学项目制作了一个微型弹射器。
The children played with a toy catapult in the backyard.
孩子们在后院玩一个玩具弹射器。
Using a catapult, they launched water balloons over the fence.
他们用弹射器把水球发射过围栏。
The engineers tested the catapult to launch aircraft from the deck.
工程师们测试弹射器以从甲板上发射飞机。
During the fair, they had a giant catapult for pumpkin tossing.
在集市上，他们有一个巨型弹射器用于扔南瓜。
The medieval catapult was a powerful siege weapon.
中世纪的投石机是一种强大的攻城武器。
She used a rubber band catapult to shoot paper balls.
她用橡皮筋弹射器射纸球。
The students learned about physics by building a small catapult.
学生们通过制作小型弹射器学习物理。
The army deployed a catapult to launch heavy stones at the enemy.
军队部署了投石机来向敌人投掷重石。
catapult launch 弹射起飞
catapult mechanism 弹射装置
catapult effect 弹射效应
catapult system 弹射系统
catapult aircraft 弹射飞机
catapult technology 弹射技术
catapult operation 弹射操作
复数: catapults;
第三人称单数: catapults;
过去式: catapulted;
过去分词: catapulted;
现在分词: catapulting;
n. 名词项目，工程；（学生的）课题，研究项目；方案，计划
v. 动词规划，计划；预测；放映，投射；伸出；凸出；表现，展现
v. 动词规划，计划；预计；（使）呈现/表现/展现；投射，放映；伸出，凸出
