How to use in-sentence of “lengthen”:
+ Double letters lengthen the vowels so that they are said a bit longer than just one letter.
+ To obtain the extra seating capacity that was being sought, it was instead decided to lengthen trains from eight cars to ten.
+ This is one reason why dislocated joints must be set as quickly as possible: if the ligaments lengthen too much, then the joint will be weakened.
+ During arousal, the vagina lengthens rapidly to an average of about 10 centimetres, but can continue to lengthen in response to pressure.
+ New subway links to the stations are also being made, and it has been proposed to lengthen the Tseung Kwan O Line with a branch line to Tseung Kwan O South Tseung Kwan O South, and the Kwun Tong Line as far as Whampoa Garden, also linking with the Sha Tin to Central Link expansion.
+ Not wanting to lengthen this heated subject, but my opinion is to keep the stubs.
+ Hard time and punitive labor lengthen the protective custody a minimum of 8 weeks; addition of a supplementary punishment lengthens the protective custody a minimum of 4 weeks.
+ Since 1996 planning and actions are progressing trying to lengthen the course of the river between Nuremberg and Fürth again and to shape it in a nature-oriented way.

