shuttles

n.

badminton equipment consisting of a ball of cork or rubber with a crown of feathers

同义词：shuttlecockbirdbirdie

public transport that consists of a bus or train or airplane that plies back and forth between two points

bobbin that passes the weft thread between the warp threads

Nopp140 shuttles on tracks between nucleolus and cytoplasm.
Toward Controllable Molecular Shuttles
Shuttles and Muscles: Linear Molecular Machines Based on Transition Metals†
Acid−Base Controllable Molecular Shuttles†
Cell-cell and intracellular lactate shuttles.
A Vesicular Transport Pathway Shuttles Cargo from Mitochondria to Lysosomes
A specific subset of SR proteins shuttles continuously between the nucleus and the cytoplasm.
Impact and application of electron shuttles on the redox (bio)transformation of contaminants: a review.
Role of quinone intermediates as electron shuttles in Fenton and photoassisted Fenton oxidations of aromatic compounds
Activation-induced cytidine deaminase shuttles between nucleus and cytoplasm like apolipoprotein B mRNA editing catalytic polypeptid...