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This is a highly efficient new heating system. 这是个高效的新取暖系统。
Some metals weld better than others. 有些金属容易焊，有的不容易焊。
It is not efficient to hire poorly trained workers. 雇用未经严格训练的工人会妨碍工作效率。
On reaching welding heat, the metal surfaces are pressed together. 当金属表面达到焊接热度时就会压在一起。
He has an efficient business setup. 他有一个有效的生意机构。
Some of the students are welding capacitor; the others resistor. 学生中的一些人在焊接电容，另一些人在焊接电阻。
He always takes pride in his work. He's very efficient. 他总是以自己的工作而骄傲。他是个很能干的人。
Some of the students are welding capacitors; the others resistors. 学生中的一些人在焊接电容，另一些人在焊接电阻。
It takes speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
Weld a bunch of untrained recruits into an efficient fighting force. 把未经训练的一群新兵组织成有战斗力的部队。
It is arguable that we would be just as efficient with fewer staff. 我们的职员少一些也能发挥同样效率，这是言之成理的。
It take speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
I'll say this (for them), (ie I'll admit that) they're efficient. 我得(为他们)说句话，他们很有能力。
It takes speed to weld steel at this heat. 在这样的高温下熔接钢铁需要快速。
The firm trained its employees to be more efficient. 公司培训员工，使他们办事效率更高。
They weld the pieces of a broken axle. 他们焊接断了的车轴。
He is welding the pieces of a broken axle. 他正在焊接断了的车轴。
His job is to weld parts together. 他的工作是焊接零件。
The welding rod threw off a shower of sparks. 焊条火星四溅。
I paired up with a very efficient young man in carrying out the order. 我跟一个很得力的青年一同执行这项命令。