When drive-ins were at the height of their popularity in the late 1950's, some 4,000 existed in the United States, but today there are less than one-quarter that many.
在20世纪50年代末汽车影院最受欢迎的时候，美国大约有4000家汽车影院，但如今，这个数字还不到当时的四分之一。
There was no significant difference between group RF and group S (P>0.05) and the total dose of local anesthetic in group RF was significant less than that in group R (P<0.01).
RF组与S组的起效时间和首剂持续时间无显著性差异（P>0.05）； RF组局麻药总用量明显少于R组（P<0.01）。
There is an abundant supply of electricity for transportation; a 60 percent U. S. market share for PHEVs would use less than 8% of grid-supplied electricity in 2050.
为交通提供的电力是充足的；在2050年，插电式混合动力车在美国市场上占60%的份额也只会用去不超过8%的电力供给。
There"s less pressure with the shorts, so it"s easier to have a great time doing those.
拍短片没有那么大的压力，所以很容易产生乐趣。
Make less noise. There "s a sleeping child."
不要出太大声音，有个孩子在睡觉。
But providing each family with a garden is still our pursuit in the new century. There' s a large amount of population in China, while less land is available.
让多数城市居民家庭有一个私家花园，仍然是新世纪家园追求的目标。
But providing each family with a garden is still our pursuit in the new century. There' s a large amount of population in China, while less land is available.
让多数城市居民家庭有一个私家花园，仍然是新世纪家园追求的目标。
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