吃透英语课本，提升在校竞争力
v. 投掷；扎营；（猛地）向前倾跌；力荐（某主张）
n. 球场；程度（最高点）；音高；沥青；宣传论点
现在分词：pitching
第三人称单数：pitches
过去式：pitched
过去分词：pitched
复数：pitches
Ultrasonic waves are at a higher pitch than the human ear can hear.
超声波的音高超出了人耳可以听见的范围。
The timbers of similar houses were painted with pitch.
类似房屋所用的栋木刷了沥青。
She crumpled up the page and pitched it into the fire.
她把那页纸揉成团，扔进了火里。
The night was as black as pitch .
夜晚一片漆黑。
He ran the length of the pitch and scored.
他跑过全场，得分了。
Try and pitch your tent on level ground.
试试在平地上搭帐篷。
His first pitch was high and wide.
他的第一投又高又偏。
pitch angle
节面角（锥齿轮的）；螺旋角
pitch circle
齿节圆，节距圆
pitch in
投入；作出贡献
coal tar pitch
沥青；煤焦油沥青；硬煤沥青
at fever pitch
处于狂热状态；处于非常激动(或兴奋)状态
sales pitch
推销商品的言辞
variable pitch
可变螺距；可变节距；变斜度
pitch period
齿节周期；音高周期
petroleum pitch
石油沥青
fever pitch
n. 狂热；极度兴奋
tar pitch
焦油沥青
pitch point
节点；齿轮啮合节点
pitch on
选中；决定
thread pitch
螺距
football pitch
足球场
screw pitch
螺纹距，螺距
fixed pitch
固定字宽
pitch control
树脂障碍控制；行距控制；节距控制；音调控制
pitch diameter
节圆直径
pitch curve
啮合曲线；分度曲线
vi.倾斜；投掷；搭帐篷；坠落
slope
throw
lean
vt.投；掷；定位于；用沥青涂；扎营；向前倾跌
cast
camp
n.沥青；音高；程度；[松脂]树脂；倾斜；投掷
extent
degree
resin
putting
measure
