3月11日，日本全国举行活动纪念大地震一周年。

Time may be the great healer but for the people of Japan a year is too short a span to ease the pain and suffering.

Japan on Sunday solemnly marked one year since the 9.0- magnitude earthquake rocked the country unleashing¹（发动） a tsunami² that killed nearly 20,000 people and triggered an enduring nuclear crisis. The quake was the most powerful in Japan since records began.

More than 3,000 people remain missing. The mass of black churning water washed away anything in its path, towns, schools and people. Parents still search every day for the bodies of their children.

An area equivalent to the size of Brussels is contaminated with radiation and a vast part of northern Japan has been reduced to ghost towns.

Many families still live in temporary accommodation（住处） , unable to return to wastelands they used to call home.

People across Japan paused for a minute's silence at the time the quake hit a year ago, 2:46 pm.

In the city of Yokohama, 27 kilometers from the capital Tokyo and home to one of Asia's largest Chinese communities, the day the buildings started to sway like giant metronomes（节拍器） has left an indelible imprint³ on people's minds.

Zheng Feng runs a tea shop at a busy junction⁴ in Yokohama that is home to about 10,000 Chinese people who live or work in this busy port city.

"My heart started beating so fast," said Zheng, 46, who is originally from Fuzhou, Fujian province. "At first I wasn't that scared, but when the second tremor⁵ hit I was frightened," she told China Daily.

"The buildings started swaying. The ground was shaking. I was scared for my son. It was a massive quake."

Xianglin Hua, 32, sells baozi across from the traditional Chinese gate that marks the entrance to Chinatown. Hua moved to Japan 10 years ago from Nanjing to start his business.

"The whole street started shaking. It was very intense. Many of the tourists were scared and didn't know what to do. People were looking around, confused. It lasted a long time."

Yamada Toshtaka, who works as a chef in the Suisen Shoka Chinese restaurant, went to nearby Tokyo Bay to take photos of the rising waves as soon as the quake stopped.

No one then realized that the earthquake that shook the seabed 64 kilometers off the coast was so intense that the Earth's axis⁶ shifted 10 cm and some northern coastal⁷ communities were about to be swept away within the hour.

"We were very lucky here. At the time I went to the bay not thinking about my safety. But when I saw the images on TV of what happened I was shocked and deeply saddened for all the people who lost their lives and for their relatives and friends. Everyone felt united in grief."

The tsunami that followed the quake devoured⁸（吞食，毁灭） everything in its path.

TV images of homes being carried on a tide of debris⁹, cars being tossed around, communities engulfed¹⁰, were seared on people's minds.

In the coastal town of Onagawa, some 100 Chinese workers, employed as seafood¹¹ packers, survived thanks to the help of locals, and one man especially. Many of the town's 10,000 residents lost their lives.

The bravery of Mitsuru Sato will never be forgotten by those whose lives he saved. When the tsunami alarm sounded the Chinese workers ran out of their dormitory and Sato took them to higher ground.

Once he was satisfied that they were safe, he ran back for his wife and daughter. But the tsunami devoured his home before he could escape.

Across Tokyo, the appearance of the frail¹²（脆弱的） emperor so soon after surgery will not be lost on people still struggling to cope, amid fears for the future, with issues like radiation, food safety, energy and rebuilding lives and homes.

At a crossroads near the subway station an old Japanese proverb hangs from a wall. It reads: Disasters happen as soon as we forget.

Lest we forget.