1.  For the dark lines of bare tree branches Martin uses a pen loaded with paint.

2.  The first cats of this type were what we today call striped or mackerel tabby, covered with thin, dark lines.

3.  Water trickled from the brown earth near the roots of the bush and traced a dark line through the tall grass.

4.  She looked down into his face with its hard dark lines.

5.  Around this ghost of a swan, peach darkens to purple, making sand, and nearly translucent dark lines dovetail to suggest leaves.

6.  A barefoot boy and girl standing on a cream-sand beach looking at the dark blue line where green sea and cloudless sky touch.

7.  A dark glue, such as some waterproof glues, will usually leave a dark thin line on light-colored wood.

8.  By analyzing dark lines in stellar spectra, astronomers measure the motions and chemical compositions of stars.

9.  Different gases the light has passed through reveal their presence through patterns of dark lines in the spectrum.

10.  Highlighting makes the work surface lighter so the dark cutting line will stand out.