sumbat percobaan bahasa Inggris

• test-plug

• sumbat:    stopper; bung; cork; plug; obstruction; back up;
• percobaan:    experimentation; flyer; probationary; test-proof;
• sumbat:    stopper; bung; cork; plug; obstruction; back up; stop up; choke off; congest; clog up; cap; secure; foul; choke; constipate; plug up; clog