平直球的英文：
liner, line drive

liner是什么意思：
n. 班轮，班机；衬垫，衬套；衬里

The liner of my coat was broken.
我的外套衬里破了。

This is a luxury liner with five passenger decks.
这是一艘有上下5层乘客舱的豪华游轮。

The liner is reported to have been in collision with an oil tanker.
据报道，这艘客轮与一艘油轮相撞。

line是什么意思：
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行

This is a lined trunk.
这是一个有衬里的箱子。

They are politically in line.
他们在政治上意见一致。

On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。

drive是什么意思：
v. 驾驶；用车送；驱动；迫使
n. 驱车旅行；大道；欲望；干劲；宣传活动

The system tried to join a drive to a directory on a joined drive.
系统试图将驱动器合并到合并驱动器上的目录。

The system tried to SUBST a drive to a directory on a joined drive.
系统试图替代驱动器为合并驱动器上的目录。

This car is a tough baby to drive.
这辆车可不太好开。