A self-winding watch is one you do not have to wind by hand to make it keep time. Older mechanical watches had a small knob; you turned it every day to store energy in a spring inside. A self-winding watch has a weight that moves when your wrist moves, so the spring winds as you wear it.

A self-winding watchself-winding(自動上鍊)的手錶 is one you do not have to wind by hand to make it keep time是不用手動上鍊也能走的那種. Older mechanical watches had a small knob舊式的機械錶有個小旋鈕; you turned it every day你每天要轉動它 to store energy in a spring inside把能量儲存在裡面的發條上. A self-winding watch has a weightself-winding手錶裡有個小配重 that moves when your wrist moves手腕一動它就會跟著動, so the spring winds as you wear it這樣戴著的時候發條就會自動上緊

You hear the word in watch shops and among people who collect watches. People also say automatic watch, which is the more common everyday name.

You hear the word in watch shops你會在鐘錶店聽到這個字 and among people who collect watches也會在收藏手錶的人之間聽到. People also say automatic watch人們也會說automatic watch(自動錶), which is the more common everyday name這是日常更常用的說法

Though actually, if you leave a self-winding watch in a drawer for weeks, it will still stop — it needs movement, or a box that shakes it. It is an adjective, almost always in front of watch.

Though actually不過其實, if you leave a self-winding watch in a drawer for weeks如果你把一支self-winding手錶放在抽屜裡好幾個星期不動, it will still stop它還是會停 — it needs movement, or a box that shakes it它需要動作，或是一個會搖晃它的錶盒. It is an adjective這是個形容詞, almost always in front of watch幾乎都是接在watch前面用