Probably because of relatively weak thigh muscles and a lack of foot support.

可能是由于相对羸弱的大腿肌肉以及缺乏脚的支撑。

youdao

Make sure you have the right kind of shoes for your foot type ( review our tips on shoe shopping). Consider buying a commercially made foot support in the footcare section of your drug store.

穿一双适合你脚型的鞋，考虑在你药店脚病专区买个脚支撑器。

youdao

In the vast majority of situations you should not need a foot support to be able to sit comfortably on your chair?

在绝大多数情况下你不应该需要一个脚的支持，以便能够舒适地坐在你的主持吗？

youdao

The Park Place search begins a day after the NYPD announced that Boeing officials had determined that the 5-foot-tall, 3-foot-wide wreckage is a support piece attached to the wing of an aircraft, and not a piece of landing gear as originally believed.

WSJ: 9/11 Remains Sought in Debris Behind New York City Building

Their 160-foot aluminum masts could barely support the loads placed on them, and the sails put thousands of pounds of tension on lines that had to be hauled by hand.

FORBES: Magazine Article

While Mrs Thatcher was carrying all before her, the Opposition Leader Neil Kinnock was fighting energy-sapping battles on separate fronts: rebuilding Labour's electoral support after their crushing defeat under Michael Foot while also rooting-out Militant, which he believed was becoming a cancerous "party within a party".

BBC: The 'Thatcher Factor': My personal post script