It was also necessary that, in proportion as this happened, the mechanism of nuclear division must be refined. At first processes resembling a simple constriction would suffice to provide for the distribution of all hereditary units to each of the products of division, but eventually in both organic kingdoms nuclear division, which alone insured the qualitative identity of the products of division, became a more marked feature in the course of cell-multiplication.英文原著 · 《Darwin and Modern Science》
As Buckley swung along upon the trail he felt the beginning of the suffocating constriction about his throat, the cold sweat under the brim of his hat, the old, shameful, dreaded sinking of his heart as it went down, down, down in his bosom.英文原著 · 《Heart of the West》
As Bob Buckley, according to the mad code of bravery that his sensitive conscience imposed upon his cowardly nerves, abandoned his guns and closed in upon his enemy, the old, inevitable nausea of abject fear wrung him. His breath whistled through his constricted air passages. His feet seemed like lumps of lead. His mouth was dry as dust. His heart, congested with blood, hurt his ribs as it thumped against them. The hot June day turned to moist November. And still he advanced, spurred by a mandatory pride that strained its uttermost against his weakling flesh.英文原著 · 《Heart of the West》
Far from the Barcan deserts now withdrawn, There, huge constrictors coil their scaly backs; There, cased in glass, malignant and unshorn, Old murderers glare in sullenness and wax.英文原著 · 《Life of Hon. Phineas T. Barnum》
of a boa-constrictor at midnight--when you find it under your hip-英文原著 · 《Little Rivers》
The religion in her, the long habit of obedience, of humility, as well as agony of fear, spoke in her voice. "Spare the boy!" she whispered. "You can't save him now," replied Tull stridently. Her head was bowing to the inevitable. She was grasping the truth, when suddenly there came, in inward constriction, a hardening of gentle forces within her breast. Like a steel bar it was stiffening all that had been soft and weak in her. She felt a birth in her of something new and unintelligible. Once more her strained gaze sought the sage-slopes.英文原著 · 《Riders of the Purple Sage》