A string trimmer, also called a "weed eater" or a "weed-whacker", is a powered handheld device that uses a flexible monofilament line instead of a blade for cutting grass and other plants near objects. It consists of a cutting head at the end of a long shaft with a handle or handles and sometimes a shoulder strap.
权威例句
1.
Nowhere in the manual does it explain the weight (thickness) of nylon string to use when reloading the trimmer, nor does it explain how to install the string into the double-threaded spool so that it feeds correctly.
FORBES: How to Cope With Useless User Manuals
2.
After multiple hair-tearing sessions with incorrectly feeding string, I finally took the trimmer into the dealer, where I got a free lesson on string replacement.