He locked the heavy door securely and kept the key in his pocket.
他锁牢了那扇重门把钥匙放在了他的口袋里。
《柯林斯英汉双解大词典》
3
Advertisers now place "banners", links to commercial web sites decorated with attractive pictures designed to catch our eyes while browsing the webs, on key web sites with heavy traffic.