Gustav landed as a secondary storm with a wind speed of about 175 kilometers per hour, and New Orleans is expected to be hit for several hours in a row.

古斯塔夫登陆时的强度为二级风暴，风速大约每小时175公里，预计新奥尔良将连续数小时受到冲击。

youdao

In Lanchester's design, two balance shafts rotated in opposite directions at twice the crankshaft speed to cancel out the niggling secondary vibrations.

Lanchester的设计中，两个平衡轴以两倍于机轴转速，反向地转动，抵消了无用的次生振动。

youdao

But this is one area where speed should be a secondary concern.

但这是一个领域的速度应该是一个次要问题。

youdao

Listed at 5-foot-11, 201 pounds, Williams is considered a playmaker in the secondary and is known for his speed and physicality.

WSJ: Bills turn to defensive need on final draft day

Listed at 5-foot-11, 201 pounds, Williams is considered a playmaker in the secondary and is known for his sprinter speed.

WSJ: Bills take Nevada safety in fourth round

It will mean a minimum speed of 100Mbps (megabits per second) for secondary schools and 10Mbps for primary and special schools by 2014, the Welsh government said.

BBC: Welsh government pledges ?39m for schools broadband