Soriano hit Peavy's first pitch, a 90-mph fastball, down the left-field line.

索里亚诺击中皮威的第一投，这个快球时速90英里，落在了左边线上。

《柯林斯英汉双解大词典》

The plasma flows in a loop along a magnetic field line.

这些等离子体沿着磁力线的方向流动喷发。

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Hence, only one field line can pass through each point of the field.

因而，在每一点处只能通过一条电场线。

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Again, in an electric field line splitting observed, the intensity of the line splitting varying with the intensity of the applied electric field.

结果也证明谱线在电场中也会分裂，而且其分裂程度,随电场强度变化而变化。

麻省理工公开课 - 固态化学导论课程节选

And he found line splitting in the magnetic field.

他发现光谱线在磁场中分裂了。

麻省理工公开课 - 固态化学导论课程节选

The ball soared down the right-field line, bending toward foul territory as it flew.

WSJ: From Prospect to Ace in 13 Starts

The ball went all the way into the bullpen in foul territory halfway down the right-field line.

NPR: Jays' Happ Hit In Head By Line Drive, Carted Off

Young and Domonic Brown hit hard singles before Mayberry ripped a two-run double down the left-field line.

WSJ: Gee tagged for 3 HRs, Phillies beat Mets 8-3