test ·verb (CHECK)
Definition: to do something in order to discover if something is safe, works correctly, etc. Level: B2
我们的产品都没有在动物身上测试过。
None of our products are ___tested on animals.
在我们使用某种药物、发胶或化妆品之前，它可能已经在动物身上测试过，以观察它们的反应。
Before we can use a certain medicine, hairspray, or make-up, it might have been ___tested on animals to see what their reaction is.
工程师们彻底测试了桥梁，以确保其使用安全。
The engineers ___tested the bridge thoroughly to ensure it was safe for use.