Muramidase released protein (MRP) is a key virulence factor of SS2.

溶菌酶释放蛋白（MRP）是SS2的主要毒力因子之一。

youdao

SS2 Business District Center, same role with Police Station, 3rd shop from the last on your left.

SS2 商业中心地区，就在警察局同一排店面，最后第三间。

youdao

On a typical journey, the mother ship will take off from the runway and ferry SS2, carrying a two-pilot crew and six passengers, to a height of 50, 000 feet.

飞船的标准航程如下，母船搭载SS2从地面跑道起飞并爬升至50000尺高空，SS2将载有两名机组人员和6名乘客。

youdao

Test pilots Mark Stucky and Mike Alsbury were reported to be at the controls of SS2.

BBC: Science correspondent, BBC News

On release, SS2 will then ignite a rocket engine to climb to a maximum altitude of about 361, 000ft (110km).

BBC: Virgin spaceship aims to be science lab

Virgin Galactic recently signed a deal with the Houston company Nanoracks to design and build SS2's payload mounting system.

BBC: Virgin spaceship aims to be science lab