Vocabs:

Sink：n. 水槽 vi. 下沉 vt. 使下沉

Defiant：adj. 蔑视的；挑战的

Commentary：n. 注释；评注

Gross：adj. 总共的；粗野的

Blindly：adv. 盲目地；轻率地

Confrontation：n. 对抗；对质

Rational：adj. 合理的；理性的

Detain：vt. 拘留；留住；耽搁

Arrested：adj. 逮捕的；被捕的

Ballistic：adj. 弹道的；射击的

Vow：n. 发誓；誓言 vt. 发誓

North Korea 'ready to strike' US aircraft carrier Carl Vinson as it heads for Korean peninsula

North Korea has said it is ready to sink a US aircraft carrier to demonstrate its military might, as two Japanese navy ships joined a US carrier group for exercises in the western Pacific.

US President Donald Trump ordered the USS Carl Vinson carrier strike group to sail to waters off the Korean peninsula in response to rising tension over the North's nuclear and missile tests, and its threats to attack the United States and its Asian allies.

The United States has not specified where the carrier strike group is as it approaches the area.

US Vice-President Mike Pence said on Saturday it would arrive "within days" but gave no other details.

North Korea remained defiant.

"Our revolutionary forces are combat-ready to sink a US nuclear-powered aircraft carrier with a single strike," the Rodong Sinmun, the newspaper of the North's ruling Workers' Party, said in a commentary.

The paper likened the aircraft carrier to a "gross animal" and said a strike on it would be "an actual example to show our military's force".

The commentary was carried on page three of the newspaper, after a two-page feature about leader Kim Jong-un inspecting a pig farm.

N Korean nuke could hit US

North Korea could have a 10-kiloton weapon capable of striking the US west coast and killing 100,000 people within four years, according to a former CIA officer. 

North Korea also warned Australia it could be the target of a nuclear weapons strike if it continued to "blindly" follow the United States.

Speaking during a visit to Greece, Chinese Foreign Minister Wang Yi said there were already enough shows of force and confrontation at present and appealed for calm.

"We need to issue peaceful and rational sounds," Mr Wang said, according to a statement issued by China's Foreign Ministry.

Adding to the tensions, North Korea detained a Korean-American man in his 50s, bringing the total number of US citizens held by Pyongyang to three.

The man, Tony Kim, had been in North Korea for a month teaching accounting at the Pyongyang University of Science and Technology (PUST), the institution's chancellor Chan-Mo Park said.

He was arrested at Pyongyang International Airport on his way out of the country.

The arrest took place on Saturday morning local time, the university said in a statement, and was "related to an investigation into matters that are not connected in any way to PUST".

North Korea to mark Korean People's Army anniversary

North Korea will mark the 85th anniversary of the foundation of its Korean People's Army on Tuesday.

It has in the past marked important anniversaries with tests of its weapons.

North Korea has conducted five nuclear tests, two of them last year, and is working to develop nuclear-tipped missiles that can reach the United States.

It has also carried out a series of ballistic missile tests in defiance of United Nations sanctions.

North Korea's growing nuclear and missile threat is perhaps the most serious security challenge confronting Mr Trump.

He has vowed to prevent the North from being able to hit the United States with a nuclear missile and has said all options are on the table, including a military strike.

North Korea says its nuclear program is for self-defence and has warned the United States of a nuclear attack in response to any aggression.

It has also threatened to destroy South Korea and Japan.

US Defence Secretary Jim Mattis said on Friday North Korea's recent statements were provocative but had proven to be hollow in the past and should not be trusted.

"We've all come to hear their words repeatedly; their word has not proven honest," Mr Mattis told a news conference in Tel Aviv, before the latest threat to the aircraft carrier.