设计药物的化学家就必须不停地确保这些钥匙只能开一把锁。
Chemists who design drugs keep on trying to make the key fit only one lock.
新设计占用更少的墙壁空间而且钥匙能返回到任何位置。
The new design occupies less wall space and keys can be returned to any location.
时尚别致，多变灵活的设计，更附有一个龙虾扣及一个钥匙扣。
Stylish and versatile, it comes with both a lobster hook and key ring.
时尚别致，多变灵活的设计，更附有一个龙虾扣及一个钥匙扣。
Stylish and versatile, it comes with both a lobster hook and key ring.
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